I am having a rather peculiar problem installing Windows XP Service Pack 2 on a laptop currently running XP Professional SP1. When I attempt to launch the installer, a message pops up stating "Setup Error - The system cannot find the file specified." When I click OK, it says "Setup Error - Installation did not complete". I have tried installing off of the copy on our network server, a copy that was sent to us on CD from Microsoft, and by downloading a copy on to the machine and running it, all yield the same result. Any ideas on this one? Thanks for your help!