Hello tomartom,
It depends on the version of Windows 7 that you have. As a good rule of thumb a minimum of 30GB is recommended for Windows 7 *(possibly more for Windows Ultimate).
http://www.microsoft.com/windows/window ... ments.aspx
If you want to run Windows 7 on your PC, here's what it requires:
1 gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64) processor
1 gigabyte (GB) RAM (32-bit) or 2 GB RAM (64-bit)
16 GB available hard disk space (32-bit) or 20 GB (64-bit)
DirectX 9 graphics device with WDDM 1.0 or higher driver
Finally, if you want to do some research; there are also some great articles, instructional videos and such to help with your Windows 7, installation, migration and upgrade decisions located at our Springboard site:
http://technet.microsoft.com/en-us/windows/default.aspx
Microsoft does have an official Windows 7 Support Forum located here
http://social.technet.microsoft.com/For ... y/w7itpro/ . It is supported by product specialists as well as engineers and support teams. You may want to check the threads available there for additional assitance and support.
John M
Microsoft Windows Client Team