I used Barts PE builder to make my own custom WinPE cd for rescues thats only about 175 megs and fits on a very small pocket cd.

screenshots here:
http://www.thebatchfile.com/junk/PE/

Bart's PE is a excellent utility. I've carried one in my laptop case for a long time and it has saved the day more than once.

i hadnt even heard of WinPE... wow windows rescue cd woot

off to have a play with BartPE sweet