Students can get Windows 7 for $30

Looks like you can get a copy of Windows 7 for $29.99 if you are a student. You can get Home Premium or Pro.

Mary-Jo Foley wrote it up on ZDNet:
http://blogs.zdnet.com/microsoft/?p=4003

Details are on the Win741 site:
http://www.win741.com/

They have an FAQ with pretty comprehensive information.