Belkin Wireless G only connects at 11mpbs for an internal network

The Belkin Wireless G All-In-One Print Server lets you easily add an all-in-one printer to your wireless or wired network. It features 802.11g technology that makes sending print jobs faster than ever, and includes a memory buffer that handles your graphic jobs effortlessly. The Print Server is so easy to install that you'll be printing in minutes. Simply connect your Print Server to your Belkin Wireless Router and run the Belkin Easy Installation CD. Next, attach your USB printer to the Print Server and load yourprinter drivers onto your computer. You are now free to print, scan, fax and readcard media* wirelessly from around the home or office. The Print Server also works flawlessly with wired networks through its integrated Ethernet port. Compatible with most USB, network-ready printers, the Wireless G All-In-One Print Server from Belkin delivers even your most data-intensive print jobs with maximum speed and reliability.

*If your all-in-one device has a card-reader slot.

Instructions:http://www.belkin.com/pyramid/documents/external/F1UP0002_EN_QIG.pdf

Have you tried the Vista driver?

http://www.win2008workstation.com/win2008/drivers-in-windows-server-2008

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

have you checked your firewall permissions and the antivirus permission allows

Check your IP address and workgroup settings in the computer or try assign Static IP to the computer.

What is the operating system of your computer? (Eg. Windows XP, Windows Vista, windows 7)

Check with antenna whether it can receive the signal or not.

If antenna geting problem then you does not receive the signal

this is from the d-link support page:
"Question :Why can't I get the advertised speed and performance when in Ad-Hoc mode? 
  
Answer : 

This FAQ applies to 802.11b, 802.11g, and Super G™products.

D-Link wireless products follow the IEEE 802.11 standards. The802.11b and 802.11g standards specify that Ad-Hoc mode only needsto support up to 11Mbps. For best results, use an access point orwireless router and set your adapters to Infrastructure (station)mode."

hi..
it has been seen that due to some reason the wep key doesnot work...
u can try changing the key type to WPA instead of WEP...
go to the router page and change the security type to WPA instead of WEP..
1 more thing in vista you can use the windows utility only...how come is it possible that you are using the card utility as well..i suggest you to disable the card utility and just use the windows default utility..
vedhick.....let me know if u need steps to change the security type to WPA..

Disable any firewalls on the machine like Windows firewall or any other firewall like Norton, McAfe, ZoneAlarm and something like that. Or if you have firewall policies or access rules, you must enable the sharing there.

Depending on the operating system that you are running, and if you have the appropriate wireless cards, you should be able to do this either with or without the modem. If you have the modem connected to one computer, and wireless cards on both computers, then your best option would be to just connect directly from one computer to the next. If you can tell me the answers to these few questions, I can help you get on the right path.

What operating system are you running? Windows XP? Vista? Macintosh?

Do both of your computers have wireless network cards? If not, then which computers have the wireless network, and which computer has the modem?