Hidden files?

I'm trying to find and copy files from a disk drive removed from a dead computer. I know which directory they are in but they are not visible. I have attached the disk drive to the IDE cable in my new computer and and see the drive and all folders without problem. I suspect it's because I used a different login for that computer but other files can be viewed, copied, etc without issue.

Any ideas?

WinXP for both the dead computer and the new one.

Try to take ownership of that folder: http://www.winxptutor.com/ownership.htm