I need to buy Windows 7 Professional, but I need to save on the money. I have noticed that there are other on line companies that sells it for a better price, but how can I trust the seller?
I am talking about those from where you download.

This system comes with the Windows XP Professional x64 Edition, which is a near feature-complete version of Windows XP Professional that runs on x64 processors. The 64-bit architecture, when combined with Windows XP Professional x64 Edition, can run the thousands of 32-bit programs available today. It’s designed for 32-bit system users who are pushing the memory limits of their systems and want the new 64-bit technology to improve their PC or workstation performance.

Windows 7 Professional is going to provide the Windows XP virtualization program. Which might be cool. Would it be worth getting Professional over Premium?

I’m going to download the Windows 7 Professional operating system from Microsoft’s website instead of ordering the disk. I’m curious though as to how large the file is going to be. I’m sure more than a few gigabytes, but does anyone know how large specifically?