I have a Dell E6500 Laptop from a client. He has the upgrade DVD from Dell to Vista and wants to move to it. The upgrade fails with the note to remove Windows Powershell. Not finding it in Add/Remove, I did a Google search and followed Microsofts uninstall/regedit. Still pops up in upgrade, stopping it. I finally got an XP version from Microsoft and installed it. I rebooted, and removed. Upgrade still fails. What the heck is going on? Hardware is compatible and all.