Save all your personal details and install W7. Migrating programmes can be fraught with problems. Save your documents, emails, address book, personal details etc., to the hard drive or to a memory stick. Check that they are all there, load Windows 7 and load all the programmes that you will need. Then load all your personal details. It does not take too long if you are methodical. I tend to load all the progammes that I will need as .exe files on a memory stick or external HD.