I haven't been able to get my parallel port working for other things (monitor rotation) in Vista 64 due to all the permissions/driver signature BS.
Neither the one on the motherboard and a add-on PCI card.
It's been accomplished by others, but some of the tutorials include disclaimers that a windows update has since killed the workarounds.

Not sure what the parallel port input on ppjoy requires, but expect these kind of issues.