| A. | My opinion a clean install is the best way to go, the only thing is that you will have to reinstall all of your applications. During this process Win 7 should find and install most of your hardware printer, router, etc.
A upgrade, from Vista, will preserve most of your applications, data, etc. including any problems with any of them. The downside is that if you have reinstall Win 7 you will have to renistall Vista or have the the Vista installation disk, then do the upgrade. I think that will be the way it works, I have never done an upgrade. |