Old-style 68k Macs have a special video connector that is like VGA, with extra pins. Adaptors are definitely available, although they might be hard to come by now that Apple has been using more standard video connectors for the past ten years or so. You could look on E-bay, or just ask in the Marketplace here and an old-school Mac fan might have one in their basement they can sell you. Heck, I might have extras in my basement!