Judy, The best version of UFT is the last sold, version 3.0, upgraded with the free update to 3.1. I'm not sure where you can get a 3.0 install disk.
I'm not familiar with the Foxpro problem - I never encountered it. I believe it got fixed in UFT 3.0.
UFT will not run natively on a 64 bit version of Windows. You need additional software to be able to run it. Ultimately, you need to install it under XP Mode running on a Windows Professional version of the operating system. I believe it will run on a 32 bit version of Windows 7 but I have not had access to a computer with that version.
You can execute UFT directly off a USB flash drive stick. Copy the entire UFT folder to the flash drive, as well as your data folder (if it is not in the UFT folder). You execute the program UFTree.exe on an XP machine. The data is updated on the flash drive. This will not work if the XP machine has been extensively locked down, as is often the case with public computers at libraries, etc.
You can import a UFT database or backup directly into The Master Genealogist (TMG) program so that is a viable fall back plan. The latest version of TMG runs on all Windows computers.