HELP!! Can't Open "SATA Slave" drive!!

I just got rid of the taste of Windows 7 beta from my computer, and copied my backup documents to my temp drive on my slave harddrive. After I formatted C: to reinstall Vista, reinstated my drivers and everything, I tried to restore my backups, only to find that double clicking any of my partitians on my 2nd HDD does nothing. Right clicking gives me a handful of options, but the primary option is "Install or Run Setup". Right clikc reveals that I can also Open Autorun, and then there's just the Open that I can't use. When I right click..>open I get an error to the effect of "You don't have permission to open... (I'm at work and don't remember exactly what it says". HOWEVER, I can open the drive if I use the Open Autorun or use my Drive Management in administrator tools. So it's just having a problem.

That and my Windows Update just doesn't do anything and drivers will not install or correct themselves now.

Should I just reformat or what? Or is there a HotFix for this already?

You have to take ownership of the files.

Bring up Properties, then click on the Security tab. This isn't a drive problem, it's a Windows account issue. When you created your user account in Win 7, did you password that account? If you did, then in order to access the files in Vista again, you have to take ownership of the files back again. Vista will not import security info from Win 7 the way Win 7 would from Vista.