which card? The Imacs? Umm, you may actually have a point, but I'm not sure/don't remember exactly. The old school fixed frequency monitors required negative sync signals IIRC, and the Macs plugged right into these. I watched a guy more or less connect a 486/early pentium right up to one, but he may have fiddled w/some settings (the cards that came out in the mid to later 90's had LOTS of user configurable bios options, like specifying the polarity of the syncs, etc.). So that monitor may be looking for a negative signal, while a VGA puts out positive? In any event it's no big deal to invert the signals. There's bound to be specific info on that still on the web, or join a yahoo or goodle group (electronics_101 on yahoo is a very good place to get many questions answered. It may be as simple as using a hex inverter chip (7406?), but you'll want to know for sure what's entailed so you don't damage the monitor.
So you got a multisyncer. Congrats. Whether it'll like syncing down to 31.5khz remains to be seen. Listen for any odd noises, transformer making strange noises or whatever. I think the major problem would be the flyback transformer (not designed for that frequency) but I'm hardly an expert. No big loss if the thing blows up I guess LOLOLOL.
That card is one of the most basic ones out there. I wish I had 10 more! It will work in either an 8 or 16 bit slot/machine.
Good luck and don't kill yourself. Don't touch the anode (lead going strait into the crt near the top). And avoid touching any components, but especially capacitors, especially the larger *cans*.
