I am trying to install some windows components on my XP system So I go into Control Panel and select Add Remove programs. I then select Add Remove windows components and then tick the component I want. The install starts but then requests the XP Professional SP2 CD. The problem is the system was built from an XP CD and then SP2 update downloaded. I have tried the original CD and two XP Pro SP2 CDs - it rejects the files on all of them. Any suggestions?