I am currently just to tired to google it for you, but you can set your windows into test mode, this will disable ALL vista crap regarding user control. The ting is that even turning the crap off does not actually turn it off, it just lets you do a bit more without asking.
So google how to set it into test mode (it's a command line thing) and I will almost grantee you that it will not complain.
I used this trick my self when I wanted access to my linux partition from vista, and I found out that turning of access control did not mean what I thought it meant...