Well, If MS only releases a "Pro" version, what would you do if you wanted to install "Pro" on 150 network computers at your office. You would go MAD making sure that each computer uses a different serial number etc. When you reinstall the computer you would have to use the original serial number as well. PAIN IN THE a** !!! That is y MS released a Corporate edition. To sell 200 copies at a time to a company and so it was easier for the company to manage their computers. They also got rid of the Windows Activation. PLUS !!! So, If you manage to find a copy of Windows Pro Corp, then you do not have to activate it !!!! Razor