Does anyone know of a desktop wireless card that works with Windows 7 (64-bit) and Linux?

I find myself in a situation where I need to get a wireless card for my desktop. Normally this would be easy, but after spending two days doing research I’m not really getting anywhere.

I need a card that works with Windows 7 64-bit and Linux. If anyone has Windows 7 (64-bit, that’s important) and you have a working wireless card could you let me know what it is? I can figure out if it works with Linux from there.