Good deals on full versions of Windows 7.  Note these are OEM full versions that do not require prior ownership and do not come with pretty retail box, but the software itself is identical.  Here is more information about OEM software.  These are about 50% less than full retail versions.

• Microsoft Windows 7 Home Premium Edition 64-bit for $97.99 shipped after code HAUNT10
• Microsoft Windows 7 Home Premium Edition 32-bit for $97.99 shipped after code HAUNT10
• Microsoft Windows 7 Professional Edition 64-bit for $133.99 shipped after code HAUNT10
• Microsoft Windows 7 Professional Edition 32-bit for $129.99 shipped after code ZZF102631
• Microsoft Windows 7 Ultimate Edition 64-bit for $174.99 shipped after code ZZF102431
• Microsoft Windows 7 Ultimate Edition 32-bit for $174.99 shipped after code  HAUNT10