Unable to restore Internet Connection

I am working off of a desktop with a D-Link N Wireless card in an E-Machine.

I am connected to a D-Link N Wireless Router.

I have had no issues for almost a year.

I found that the wireless link was lost.

I restored the link. Then I could connect to it via laptop and get on the net but could not get on the net using the desktop.

I looked at the network connections which indicated good connection on the wireless link, but.....

The internet concection was disabled.

I tried to re-enable it, but it would not work.

Any ideas would greatly be appreciated.