The USB PC version means it is meant to run on a PC monitor. Will not work on an arcade monitor.
It was my understanding the TV version doesn't work with arcade montiors -- you want the USB/VGA version, which is the PC version, for your arcade machine.
At least, that's the one I have, and it works like a charm with my ArcadeVGA card on a real arcade monitor.
Great question Fred; I was actually looking to upgrade to a PC with more OOmph -- but that would involve a motherboard without AGP slots -- I want to accomodate a dual or quad core processor - so it would mean bye-bye to my ArcadeVga card (v1). If we confirm the guns work with Softkhz, then I'm all in too! Anyone out there use this combo? Thanks!