I'm working from memory here, so bear with me.Seems to me that one time I renamed a .paf file, and when I opened PAF again it was, of course, unable to find the file to open it, so a menu popped up that offered, amongst other things, to scan the hard drive for .paf files.
So try this.Make a current back up of your file on a floppy for safe keeping and also copy the file to its new location, using the original name.Go back to the directory where the .paf file was originally kept and rename it. Then open PAF and see if you get the same menu options.If this works like I think it should, you should be able to have PAF scan your hard drive, it will find your file in its new location, as well as the renamed file in its old location. Just go ahead and open the file in its new location, and PAF will now log the new location of the file.At this point you should be able to go back and delete the old, renamed, version of the file and you're on your way.
Since PAF 5.1.12 now stores everything in one file, rather than multiple files like the older versions, you shouldn't have to move anything else.Program files will have to stay where you originally installed them.I'm assuming you only want to move your database files.