I have a WBR1310 router. My encryption key is 63

Network security key
Some later model wireless routers have the Password (ie.Encryption key) and the SSID already configured in the wireless router and this information is printed on a label on the bottom of the router.
These settings can be used to configure the wireless card and wireless adapters in your computer/laptop.
If these settings do not suit you, then it can be changed to suit your requirements.
The encryption key secures your data and wireless connection from unauthorized access.To configure the wireless settings in the router, connect a LAN cable from your computer to the wireless router, then open a Browser on your computer and enter the router's configuration IP address, then enter the admin login and password and then go to the wireless settings and configure the SSID and Encryption key.
The router's encryption key can be a Passphrase or the WEP or WPA or WPA2 key.If you use the Passphrase method select either WEP or WPA or WPA2 to generate the encryption key. You can enter the WEP or WPA or WPA2 key with 8 to 63 ASCII characters or 64 Hex digits.
Most people use Passphrase which is easier to remember eg. I was born in January 1988.
The strongest and latest security is WPA2, the weakest and oldest is WEP. To connect to your wireless router from the computer/laptop, configure the wireless card in your computer/laptop with the router's wireless settings ie SSID, plus the WPA or WPA2 encryption key. Then computer/laptops can communicate with your wireless router.

I assume you mean your wireless router encryption key.
Some later model wireless routers have the Password(ie.Encryption key) and the SSID already configured in the wireless router andthis information is printed on a label on the bottom of the router.
These settings can be used to configure the wireless card and wireless adaptersin your computer/laptop.
If these settings do not suit you, then it can be changed to suit yourrequirements.
The encryption key secures your data and wireless connection from unauthorizedaccess.To configure the wireless settings in the router, connect a LAN cablefrom your computer to the wireless router, then open a Browser on your computerand enter the router's configuration IP address, then enter the admin login andpassword and then go to the wireless settings and configure the SSID andEncryption key.
The router's encryption key can be a Passphrase or the WEP or WPA or WPA2key.If you use the Passphrase method select either WEP or WPA or WPA2 togenerate the encryption key. You can enter the WEP or WPA or WPA2 key with 8 to63 ASCII characters or 64 Hex digits.
Most people use Passphrase which is easier to remember eg. I was born inJanuary 1988.
The strongest and latest security is WPA2, the weakest and oldest is WEP. To connect to your wireless router from the computer/laptop,configure the wireless card in your computer/laptop with the router's wirelesssettings ie SSID, plus the WPA or WPA2 encryption key. Then computer/laptops cancommunicate with your wireless router.http://www.fixya.com/support/r10267861-network_security_key

The WPA encryption key is in the wireless setting of your wireless router.
Some later modelwireless routers have the Password (ie.Encryption key) and the SSID alreadyconfigured in the wireless router and this information is printed on a label onthe bottom of the router.
These settings can be used to configure the wireless card and wireless adaptersin your computer/laptop.
If these settings do not suit you, then it can be changed to suit yourrequirements.
The encryption key secures your data and wireless connection from unauthorizedaccess.To configure the wireless settings in the router, connect a LAN cablefrom your computer to the wireless router, then open a Browser on your computerand enter the router's configuration IP address, then enter the admin login andpassword and then go to the wireless settings and configure the SSID andEncryption key.
The router's encryption key can be a Passphrase or the WEP or WPA or WPA2key.If you use the Passphrase method select either WEP or WPA or WPA2 togenerate the encryption key. You can enter the WEP or WPA or WPA2 key with 8 to63 ASCII characters or 64 Hex digits.

Hello. Wireless security strength depends on the mode of encryption you are going to use (WEP, WPA-PSK [TKIP], WPA2-PSK [AES], WPA-PSK [TKIP] + WPA2-PSK [AES]).
WPA-PSK should be enough to secure your Wireless network.

ASCII - Choose from any key available on the keyboardHexadecimal - Characters ( 0~9 and A~F)

• Before setting up wireless security on the router, make sure the computer you are going to use to setup wireless security is directly connected to the router using an Ethernet cable(wired).

• To setup wireless security on the router, access the router user by typing http://www.routerlogin.net or 192.168.1.1 in the address field of your browser and then press Enter.
  
• Enter admin for the router user name and your password (or the default, password).

• Choose Wireless Settings from the Menu on the left.

• Select WPA-PSK under Security Options. Input the Passphrase.
  

Passphrase can be 8~63 Hexadecimal characters or 8~63 ASCII characters.
Take note of the passphrase then click Apply.
Hope this helps. Have a nice day.

The Short Answer:
Your password might not meet criteria. It also depends on whether you use a custom encryption key. If so, then you either need to create a 10-digit or 26-digit hexadecimal number (numbers 0-9 & letters a-f) depending on whether you use 64 or 128-bit encryption.

The Long Answer:
A WPA password must be between 8-63 characters long, and must only contain ASCII printable characters.
The 2Wire User Guide for the 2700 states the following:
"You can customize the following wireless settings in the Wireless Security panel.
1. From the Authentication pull-down menu, select an authentication setting: WEP-Open, WEP-Shared, or WPA-PSK.
Note: WPA-PSK authentication is supported only on HG model gateways.
Open authentication allows users to configure their wireless adapter as either Open or Shared; in either case an encryption key is required. Shared authentication allows users to configure their wireless adapter for Shared authentication, which requires an encryption key. WPA-PSK requires that users configure their wireless adapter using TKIP.
2. To use the encryption key that came with your gateway, click the Use default encryption key radio button.
To create a custom encryption key, click the Use custom encryption key radio button. If you select Use custom encryption key, you can define a 64-bit or 128-bit encryption key. For 64-bit encryption, enter a 10-digit hexadecimal number. For 128-bit encryption, enter a 26-digit hexadecimal number. A hexadecimal number uses the characters 0-9, a-f, or A-F.
3. Click SAVE"

If your using WPA and your Nintendo DS only supports WEP Encryption theres no way you can connect it to the internet. WEP encryption is different from WPA.

WEP key uses hexadecimal - using characters 0-9, A-F or ASCII format. The ASCII format is easier to remember. The ASCII string is converted to HEX over the network.

Example of WEP key encryption are:

*64-bit hexadecimal keys are exactly 10 characters in length. (12345678FA is a valid string of 10 characters for 64-bit encryption.)
*128-bit hexadecimal keys are exactly 26 characters in length. (456FBCDF123400122225271730 is a valid string of 26 characters for 128-bit encryption.)
*64-bit ASCII keys are exactly 5 characters in length (DMODE is a valid string of 5 characters for 64-bit encryption.)
*128-bit ASCII keys are exactly 13 characters in length (2002HALOSWIN1 is a valid string of 13 characters for 128-bit encryption.)

WPA Key is entered as a pass phrase between 8 to 63 alphanumeric characters in the ASCII format at both ends of the wireless connection. Although PSK accepts a minimum of eight characters, for proper security, it is a good idea to use ample length and should not use a commonly known phrase. This phrase is used to generate session keys that are unique for each wireless client.

To resolved the issue you have an option to change the WirelessSettings on your router to WEP instead of WPA since WEP is also a secured netwrok. however you need to keep in mind that if you change the encryption you need to configure all othere device connected to the router via WPA and change the settings to WEP.


Thanks for using Fixya

You can enable WEP on your router.

In the address bar of your browser, type 192.168.0.1 to access the setup page of the Dlink router.

By default the username is admin and leave the password blank.

On the Setup page, go to Wireless.

Security Mode should be WEP then click Next.

You can change the WEP KEY 1. Make sure you remember this because you will need to enter this on your wireless computer.

Save the settings.

I hope this helps!

The WEP encryption is consist of 10 characters for 64 bit hex, 128 bit hex is 24 characters and WPA is 8 to 63 characters. So it seems that you have a vista computer? The compatible encryption for vista is WPA, sometime using WEP it is not working properly. So I might advise you to access the configuration of your router (192.168.1.1) and change the wireless settings of your router to WPA-Personal.

I had this problem, My wirless router is using WEP Authentication with a "Shared Key". I had to change this to either Open or Automatic on the router.