when trying to apply the sw2004sp5.0 service pack, the installer acts like it can't see the msi file on the cd, even though it is in the preview window. I found a command line method in a bulletin that was relevant to sp2.1 or whatever, but this method didn't work either. Other service packs thru 4.1 worked on this same cd set, and they autoexecute properly when first put into the drive. antivirus was diabled. Any ideas how to get the installer to work? thanks bill WinXPsp2