"access denied", you've got to take ownership of the files. If the message is "there is a protection we need to cancel" (as your write) there might be another problem.
I just wrote about it in http://forums.cnet.com/5208-6142_102-0.html?forumID=5&threadID=268176&messageID=2607905#2607905
Hope you can read better than that poster.
I had a laptop which broken but the hard disk was working. I have taken it out and put it on this usb box to use it as an external hard drive. But obviously there was Windows XP alreadly