Just how can I add Windows solution packs and also updates to my Windows XP/Vista install cd/dvd?
The procedure is called Slipstreaming. Below is a step by step guide for XP (little a difficult hack). You can make use of the Vista Update Integrator with Windows Vista. There is the VLite device for doing it under Vista. If you desire a computerized method under XP you can make use of NLite.