AutoCAD and Roaming Profiles are about to kill me

Ok, I am about to jump off the roof

We have upgraded to AutoCAD 2005 and use roaming profiles.
We are in the switching our profiles from Novell Zenworks
to Windows Domain. Now, for a long story. The Zenworks
sets users up as Power Users and everything is honky-dory.
Originally, the Windows profiles were setup as just Users
so AutoCAD could not register its filetypes. I added
Domain Users to the Power Users group. Now, the Windows
profiles still will not register the AutoCAD filetypes.
I have installed SP1 for AutoCAD to no avail. I have even
added the individual user to the Power Users group and
still get nadda. If I add Domain Users to the Administrators
group, the filetypes get registered. But that is not a route
I want to go. I also know that the Power User setting is
working because the user can change the Power Options where
they couldn't as a regular user. Oh, and the machines are
running Windows XP Pro SP2 and the Domain Controllers are
Windows 2000.

AutoCAD works fine otherwise. However, I need those filetypes
to be registered for our main interface program.

Any suggestions?

Thanks,

Patrick Jones