I can't connect to wireless networks please help!

Hi

I have a serious problem on my Windows 7 Ultimate. I can't connect to wireless networks with my laptop.

I installed win 7 ultimate with dual boot with vista. Everything was fine for 1-2 weeks, my download speed was slow but connection was normal. I read over forums about this problem and some people told that they changed their drivers and everything had been fine. So i tried to change the driver, i checked the laptop specs and it seems that my wireless card is intel 3945abg, so i decided to change the driver to it. Windows 7 installed Atheros 5007eg drivers by default and it was working fine as i said above. After i change the driver, it didnt accept the intel driver and then i decided to switch back to Atheros driver. I removed the item from device manager and it automatically installed the Atheros 5007eg driver. Everything seems fine but it cant find any networks. I tried so many things nothing worked. When i click to find out the problem it says, "windows couldn't automatically bind the ip protocol stack to the network adapter".

I can connect in vista so the network card works. I can also connect with usb wireless stick in win 7.

I need your urgent help about this situation. Please help.

Thank you

Regards

Thank you for your reply. But as i said i did so many things but nothing worked. Anymore suggestions?

Thanks

anyone has a solution?