I've used the following guide :-
Windows 7 Automated Imaging and ZCM Registration | Novell User Communities

To help build a basic Windows 7 environment, and we have successfully deployed this to our current devices. However, we have a new batch of devices that require Mass Stroage drivers injecting. Now this was a pain in Windows XP, but in the sysprep file you had a Mass Stroage section. Looking at Windows 7 everyone is talking about DISM and offline imaging. This doesn't fit with what I have configured. Do I need to switch to wim files ?
Or has anyone any experience in injecting MSD drivers into sysprep in Windows 7.