It sounds like you are trying to upgrade XP to Seven. I don't think that is possible. There was another OS between them, namely Vista. you would need...
I just removed mine. There is also an app that lets you do stuff like that. Unfortunately I can't remember it's name right now. If I think of it I'll...
If I haven't updated MSE for awhile, I often find that the app-based update fails, saying connection was lost. So I download the defs manually, which...