I would also suggest creating a new copy of the Windows install CD with service pack 4 integrated. So that if you ever need to install anything from it, you won't be installing older files from a previous SP. Probably the easiest way to accomplish this would be to use nLite.
I would also create an offline update CD using ctupdate
so that you'll have all of the updates installed before you put your PC online.
Edited by Eisles, 08 November 2007 - 12:50 PM.