Recovering a user profile

If you have a local user profile that was disconnected from the
user's
logon account, how can you tell Vista to point the logon account back
to the original user profile?

To do that in XP, you would change the ProfileImagePath to the
original profile folder and then make sure the user had appropriate
permissions to the folder.

But that doesn't seem to work in Vista. What else does Vista need to
point
back to the original profile?

Note that the goal is programmatic control, so I need to understand
how Vista finds and verifies the profile. Any pointers?

After doing some research it appears it's a permissions problem in
propagating the ACE across the entire user profile tree. I get access
denied when it propagates on folders like: History and My Documents

So what's happening there? Is there a simple way to replicate the
folder security settings from one user to another?