Actually there is. I looked at my WAIK install and it had dism so download WAIK
(Windows Automated Installation Kit).
There's also Microsoft Deployment Toolkit (MDT) 2010 Beta
. I was playing around with it earlier and didn't have much success and wasn't in the mood to read the help files.
Probably the easiest method would be to try vLite
but I don't know what success people have had integrating drivers. vLite was designed for Vista but it does work with Windows 7. Check over at msfn.org
for vlite issues.
The last 2 options still require you to have WAIK installed!