Regain control over your files by changing ownership would be a way to go, but when you place the disk back in the Win7 PC you will expect problems (differences between the NT filesystems from win7 and XP).
How do I change the ownership? This HDD isn't going back into a Win7 PC since it is an IDE drive and I don't have any IDE ports on my new mobo.
That's not a permissions issue. The Win 7 librarys use a file system link type that XP can't follow/understand. If you just go to the folder on the drive that the link points to, you should be able to access it from there.
I wasn't using the Library link to get to the files. I was at the actual location on the HDD. I have attempted to copy over the network and even locally to an external USB HDD but it tells me I don't have permission or access is denied or something similar.
I can see the files just fine, and I think I can even use them without a problem (though to be honest I'm not sure I've tried yet) but for some reason I can't copy them to another HDD.