If you're doing ConfigMgr OSD or MDT, and you're running Dell hardware, you want to take a look at the new Dell client system deployment driver cab files! Check out the Vista and XP walkthroughs to get a good idea of what these files will do for you.
Basically, you will download a .cab file for a model, (e.g., Dell Latitude E6400 For Windows Vista x64 and x86), extract the cab, and import the drivers. . . easy as pie!
If you're at MMS 2009, stop by the Delll booth for a USB drive with beta driver cab files for the E6400. If you're not at MMS, stay tuned, because the E series driver cabs will be released in early May!
Greg