So far, Apple does not ‘officially’ support Windows 7 on BootCamp. Their site released a statement on October 22, 2009 and it has not been updated. Apple states:
Apple will support Microsoft Windows 7 (Home Premium, Professional, and Ultimate) with Boot Camp in Mac OS X Snow Leopard before the end of the year. This support will require a software update to Boot Camp.
With that being said, most Mac users are able to install Windows 7 on BootCamp without any issues. Here are a few links to forums that discuss this and installation help.
Forum on Macrumors.com
Forum post on Apple.com