install windows 7 32-bit using boot-camp on snow-leopard
Thousands of tutorials can be found using Google or YouTube, for example:

http://www.simplehelp.net/2009/01/15/using-boot-camp-to-install-windows-7-on-your-mac-the-complete-walkthrough/

http://gizmodo.com/5387353/how-to-survive-boot-camp-and-run-win-7-on-a-mac

http://www.youtube.com/watch?v=OM2495dmO0I