Don't listen to Sofi, don't let Jobs rape you.
I bet Sofi's Mac has a "My ass is tight" engraved on it. He likes to be on the receiving end.
You don't need to reinstall Windows 7. Run autoupdate and install everything it wants, I'm sure that wifi card drivers are out there but you have to "tick" the box to download them.
If not then find proper drivers for your wifi card online.