I have a copy of VFP 5 on my XP. Where in Houston are you? You could check with HAL-PC. They host a VFP SIG. I would bet that some of their systems have have it installed. They're in the Galleria (Post Oak - 610/290 exit 9b)
I searched on VFP5a - there seemed to some issues related to that version upgrade.
Imagination is more important than knowledge