Hi, I'm doing maintenance on my Dell Dimension 4700.  I was trying to scan for missing Windows file, using the "sfc /scannow" command, and every time it detected something amiss, I was asked to insert my XP Pro CD Rom that came with the system, which I apparently no longer have.  Is there some way of accessing those files online or obtaining a replacement disc, without having to pay for the whole program?  Apparently, I have a bunch of files that are missing or corrupt.  Thank you!