Vista User Account Protection is turning me homicidal

So, as some of you may or may not remember, I recently posted and asked for help removing files from a hard drive, after I had backed them up to some external drives I have laying around. Now, here is my problem.

The hard drive the files are on right now, has Vista Home Premium 64-bit installed. The computer this hard drive used to be in has severe hardware problems, to the point of even refusing to boot from CD.

I connected the drive as a slave in my other computer, plugged in the external hard drive, and set about moving files. Or rather, I tried to. As it turns out, I cannot get to the files I want to copy.

Let me back up. The Vista installation has two user accounts with Admin privileges, one for me and one for The Guy, and a third account, Vista's Administrator. We have game saves there that we want to keep, and various photos, documents, and music. Now, since I am not logged in to either account, Vista will not let me view the files, and as a result I can neither copy them or delete them.

The CPU in the system I have to work with is not 64-bit compatible, so I can't boot from the Vista drive and get to the files that way.

So here is my question: How do I circumvent the account protection so I can get the files copied and deleted?

 

Boot with a 'nix live cd? It should let you do what ever you want.

 

You can try to change the access permissions. I assume you're doing this from an administrator account.
Right-click on the folder you cant access and go to properties->security->edit, select "administrators", checkmark "full control" and save.
I'm not sure that this will work.

 

Right-click or left-click, the only result is unfortunately the little red warning that says "you don't have permission to access this folder"

 

So. I have tried booting from a Linux CD, and it barely managed to get to desktop before it crashed. Now what?

 

http://www.vistax64.com/tutorials/67717-take-ownership-file.html

 

Hm... that looks like it might work. Except, how do I do that from within XP, with the Vista drive connected as slave?