To further alferrets advice i`d say get a hold of the relevant installation CD/files he mentions then grab all the relevant service packs,drivers & software you need then slipstream the whole lot into one nice simple installation CD with
Nlite .
You can
trim out the junk you dont need with nlite or of course
add the things you do need.
The above is assuming it`s XP we`re talking about but if not then there`s always vlite for Vista.
http://www.vlite.net/
Not too sure if theres going to be a 7lite