Take a look at this thread: http://answers.microsoft.com/en-us/windows/forum/windows_7-security/access-denied-to-2nd-hard-drive-in-win-7/35013321-4244-4095-a295-c778bc2f22a3
Scroll down until you see the answer and then look for the paragrahp "To take ownership of a file, follow these steps: " with step by step instrcutions on how.