how to copy wista user profile to default profile

Hi,
I have an active directory user profile on VISTA Pro.
For funny reason (after installation of Sophos AV) Windows cannot load it.
Instead new profile was created when logged in to AD.
Need advice how to copy corrupted profile to a new one.

Please click by click explanation. I didn't have time to "play" with Vista.
And it's a bit confusing.

May be it includes some utility. Is it like on XP that local Admin can copy
whole profile and that's it?
What's new about ntuser.dat and etc.

Thanks,
Michael.