Hey, congrats con el installation.

Did you select 'Wireless: Intel 2200' during the configuration before you installed OSX? Did you remember to re-enable the wireless nic in the BIOS after the installation? Did you upgrade Airport (I didn't and it worked, but it's something you can try)? If you did, I can't be much help, but maybe someone else can help.

I didn't install windows (or linux) AND OSX, but many people 'dualboot', try googling:
http://www.google.com.pr/search?hl=e...G=Search&meta=

Good Luck!