Originally posted by: QuixoticOne
There's no special "copy protection" of the disc that makes it particularly difficult to copy. Just any full disc clone copier program will make a decent copy. Just ensure that you're cloning the whole disc and aren't doing anything to make the copy non-bootable and it'll be as good as the original for the purposes of installation.
If you're going to get a new copy you probably already have SP1 integrated (which would be a good thing).
If you feel like doing more work you could add stuff like necessary device drivers, favorite utilities, lists of your software keys, et. al. to the installation disc to make it more customized for your needs and make that disc a bootable install medium. Unfortunately that is somewhat difficult, would be limited by the free space on the disc, and also would be susceptible to short term obsolescence of your added utility versions anyway.