pdnnoob.... I don't know that it was ever "intended" to be portable, but PDN was a small enough program that it used to be easily installed on a jump drive, and many of the users did. It is still small enough that it is easily installed on a jump drive, but apparently it needs to access a C++ file of some sort on the machines hard drive (and that is something that is apparently not installed on the machines at work)
I have now found other threads that address this issue..... It was late last night when I was searching, and I think I may have spelled "Portable" wrong. I will take a look at Liberkey.
Sorry for asking a repeated question, I need to brush up on my search skills (or my spelling). Thanks for your answer!