Take a look at:http://www.microsoft.com/downloads/details.aspx?FamilyID=1B544E90-7659-4BD9-9E51-2497C146AF15&displaylang=en
Made by windows, and this program will tjeck the computer, and give you the facts, what is nessery to do before you can install win7. If still running windows for workgroups, no chance. If running Xp much bigger chance. Best of luck with this.