I am developing a SCCM (with MDT 2010 Update 1 integration) OSD Task Sequence for a client using Windows 7 SP1 Enterprise x86. I've downloaded the latest CAB files for both Desktop and Notebook Dell's and imported them into SCCM. My process is fairly standard for the "Apply Driver Package" Task Sequence step, with a WMI query distinguishing between Dell desktops and laptops.
Now I've only been able to get a Latitude E6420 at the moment to test, but even though the process goes through without error, each time the graphics is showing as "Standard VGA Graphics Adapter". I am unable to point to the source files and update the driver to anything else - it just reports that it is the latest driver.
The only way I can get the correct driver to install is to manually point directly to the required INF file - but this isn't really acceptable. Having the driver installed unattended is the desired outcome.

OK - so I looked back at the CAB download page and saw that there is an NVIDIA driver issue for this model specifically. Is this the issue that is causing this?

"OK - so I looked back at the CAB download page and saw that there is an NVIDIA driver issue for this model specifically. Is this the issue that is causing this?"

Yes this is the same issue. It is being worked by Nvidia, but there is no ETA yet for a new driver.

Driver cabs with new Nvidia drivers are available today

http://www.delltechcenter.com/page/Dell+Business+Client+Operating+System+Deployment+-+The+.CAB+Files

Appreciate the update Warren! Thanks.