Some of you may have known that just imaging a windows 7 computer will not work because of the SID. Since NEWSID does not work with Vista or WIN7 you will have to find another solution. One solution is to use sysprep. (you have to change the SID if the computer is on a domain).
If you have access to a program called ghost walker you are in luck. It is found in ghost suite 11.5.1 (this is the most updated with win7 support, 11.5.0 goes as far as vista).
so once you create an image you can deploy it using ghost. veiw manual for deployment options. after the deployment go to the command prompt and run ghostwalker.(you do not need to reboot.) Note: I created a bootable USB Flash Drive that has ghost.exe, drivers and ghostwalker on the root. you can create this using ghost boot wizard.
one thing to remember when naming the computer and this is in the manual; your naming of the computer has to stay the same length. so if you want to name your computers pc-1,pc-2 etc. then your base image should be pc-x.
This is a much better solution than creating an answer file and using sysprep. Since alot of people are having trouble with it.