Me too i used a d-link 2640t wireless router and now my home has 4 computer needed to on9, but the valid ip range only at 192.168.1.2-192.168.1.2 so whats the problem? now only one for four computer can connect to the internet can anyone help?

This is too involved to just post your router settings. I would recommend reading up on how to "cascade" your router or to make your Modem/Router act as a bridge.

The dlink will need to have its DNS disabled and have the Linksys do the DNS. Then the LInksys will be using the Dlink as its host. you may be better off seeing if you can make the dlink run in Gateway mode instead of router mode.

Then see how to implement the cascading router with your particular situation and WAN IP.

yes u can just use the same range ip address for both device like 192.168.0.1 for dlink and 192.168.0.2 dor airplus.

Hope this helps. Please rate my response.
Thanks.
Have a good day.

You could setup two different profiles, one for each wireless router.
Configure your home wireless router with a different SSID and encryption setting to the office wireless router.
Then configure the wireless card in your laptop with two different profiles, one for the office wireless router and one for the home wireless router. When you want to use the home or the office wireless router, just call up the profile you require.

suggest you connect a pc directly to the printer via ethernet cable or network switch with the computer temporarily having its ip address changed to what ever the printer ip address range was.
Then run bradmin and change the printers ip address to the router's range suggest a high ip address not sure what you are using but 192.168.1.250 or it might need 10.0.0.250 what is the router using. May need to change dhcp server to lease only to 249
to be safe.
Then when you have changed the ip address fix the ip address of the computer and then reconnect it all back the way it was

open the access points in the internet explorer
in it set the wireless security to WEP and provide the network encrypted password

This one can be one of two things.

If you have a digital multimeter, check the power connection and make sure that it's not to high (eg. 7.5 V DC should read no more than 7.8 V for it to work properly)

Otherwise, just reset the router. I have a feeling it is the first one.

Once it reaches to 130% above of what's rated, it can fry your network adapter in your computer and possibly more damage if it's wired.

let me give you few suggestions and then you can take it from there.

firstly IP camera is just what its name says..it needs a fixed IP address it may be local as in your lan where it is working or a IP address from ISP.
Now when you connect it behind router... it is essentially a camera connected to LAN.
now the problem is DYNDNS.com will give access to your router since that is connected to dynamic IP addressing. However Ip camera is behind router and to access it you need to open proper protocol and port in router .consult your router manual for doing that.

with your current setup that is the only solution. however you can connect Ip camera directly to ISP line and then use dyndns as in case of router. though i dont know how feasible that will be for you.you have not mentioned IP camera model so cant help with specific details.

Follow
anurdh65 solution...........

Make sure you are plugging the SMC into the WAN port on the Linksys router and not the LAN ports.  Your internet connection (which is your SMC) should always plug into your WAN port on the Linksys.  Any computers that you may need to plug in, like Desktops that are "wired" and not "wireless", should plug into the LAN ports on the Linksys.  If you are not using the WAN port on the Linksys for your SMC modem, then that would explain why you cannot get to the internet on wireless or wired computers.
Here's why you are getting the "low connectivity" message:

Computers don't understand why the Internet is connecting or not connecting...so the "low connectivity" message you keep receiving has nothing to do with your wireless signal strength.   To a computer NIC, "low connectivity" means your network adapter could not find a DHCP server and receive a valid IP address.  When this happens, your network adapter assigns an IP address to your computer in the following range...169.254.0.0, and will display the "low connectivity" message until it is able to receive a valid private IP address from the DHCP server.  You can verify this by going to START | RUN and typing "cmd" (without the quotes), then hit ENTER.  A black box will pop up....then type "ipconfig" (without the quotes) and hit ENTER.  This will show you your IP address, subnet mask, and gateway address, and you can verify that your IP address is in the 169.254.0.0 range.  A valid private IP address is typically in the 192.168.0.0 range, but could also be in the 10.0.0.0 range, or the 172.16.31.0 range.    Also, make sure you have DHCP server enabled on the Linksys router for the LAN.  This will ensure your "wired" and "wireless" computers receive a valid IP address.  
The WAN port on your Linksys router should be configured to "Obtain an IP address automatically using DHCP".

Cheers!

could you able to solve.pse share