Auto Login as part of OSD Task Sequence

Hi,

I am wondering if there is a way to force a Login with a specified account to Windows as part of an OSD.  I have an command in the registry in HKEY Local Machine...../RunOnce that needs to run before the end user uses their computer.  Unfortunatly, it just will not run as part of a "Run Command Line" Task. 

I can accomlish this by using the GUIUNATTEND AutoLogon in Sysprep, but that also presents some challenges.  If there was a way in the OSD Task Sequence that I could force a login with a specified account and then logout, that would be great.

Thanks

Rosy_55