wat version is your Mac?

mac book white or mac book pro?

bluetooth, webcam and sound all working?
i installed Win7 direct to my 2008 mac book white ( not the bootcamp )

only webcam and bluetooth not working

just install antivirus for your windows la, since when .exe virus files hurt your mac ?

if ur windows gets virus, it'll just affect ur windows, not ur mac.

however, rmember that u might transfer an infected file into mac. it still wont affect ur mac, but if (in OSX) u share the infected file with someone else, they can get infected

Get Microsoft Security Essentials, turn on your firewall and make sure to keep your browser and its plugins up to date. Count yourself lucky you get a virus that's sole purpose was to crash your computer, and not install rootkits to steal your passwords.