Technet forum: http://social.technet.microsoft.com/Forums/en/configmgrosd/threads
Manipulating the Microsoft Deployment Toolkit database using PowerShell http://blogs.technet.com/mniehaus/archive/2009/05/15/manipulating-the-microsoft-deployment-toolkit-database-using-powershell.aspx (his blog has other info about MDT, SCCM and OS deployment)
http://www.windowsnetworking.com/articles_tutorials/Deploying-Windows-7-Part5.html Mitch Tulloch and his article series
Todds Blog http://www.toddlamothe.com/microsoft-deployment-toolkit/mdt-2010-deploy-windows-7-vhd.htm
Aidan Finn http://www.aidanfinn.com/?p=9869
Technet tutorial http://technet.microsoft.com/en-us/windows/ee410767.aspx
We successfully deployed win7 through SCCM but it needs more customisation.