A bunch of tech questions

Open CMD and cd to the folder. Type "dir /q" to get file owner information.
Is it a Paint.NET issue trying to read it? Try opening with Windows Picture and Fax Viewer to view them.

No, Paint.NET is just the first program I found that gave me a nice "access denied" popup, Picture and Fax Viewer just gives me "no preview available" and I use a non-default program for moving/copying files and I didn't want to confuse people. How do I get to the folder by "cd"ing? I really don't know how to do anything with the command prompt other than copy text into it.

Thanks for the partition tips, I'll save it for when I'm feeling more active and courageous.