Thanks for the excellent article.
I am having some issues deploying this setup. Obviously it works well. The differences with my setup is I am using the RTM copy of Win7 Enterprise, along with the RTM language packs. I see you are using Win7 SP1 Media and Language Packs.
The MDT-Integrated task kicks off in SCCM 2007 R3, but when it comes to the step to install the language pack (Spanish), it downloads it, pauses for a second, then moves right to the next step, which is install Windows and ConfigMgr.
Any ideas? I see a few other users with this issue. You helped a guy named Simon out with a similar problem but files in my MDT folder dont seem to be the problem. Thanks in advance.