Donald- This is the Ultimate Family Tree Forum, so you should go up one level on the Genforum linking to "General", and then back down to "Using" Family TreeMaker" to post your question about opening FTM 3.02 (?) in Win XP.
Or, just type "Using" in the Jump to Forum box above, right.
I believe that the FTM 3.02 program can be opened in XP, but other long time FTM users can probably answer that question better for you. The data can definitely be transferred to a later version of FTM on XP.
It seems that you originally transferred this data to FTM from UFT by opening a UFT Gedcom. Be aware that there may be certain other files now in this "UFT Subfolder" other than Ftw.exe that FTM may need, so be sure to copy the entire folder to XP. -john