still not working...sorry for your trouble, have you changed anything with your firewall? -try disabling the firewall and then connecting. then re enable the firewall -or try from safemode w/networking which if successful would indicate a firewall issue.
have you tried changing the wireless channel in your router? -if its 6 try 11 or visa versa
you can try changing the security type in the router from wep to wpa
hope any of that helps ...If not and you don't get a better answer I will try to get one for you tomorrow
****Busy day today but trying to come up with a resolve ....If not already done/tried, is it possible for you to cable to the router and make sure you can connect that way? Also if you can connect, try updating your wireless NIC while your there..??
**just on a fluke ...make sure the physical switch didnt get turned off - some of those are located in very bad places/:
...also can go to device manager and disable and re enable, update the driver or *roll back the driver if updates caused the problem
***Can also uninstall the NIC & re install (from the device manager) - I don't know what operating system you are running so you may want to search for info on doing that or use your disk(?) to reinstall if needed