Sandra, if all of that doesn't work, there is another way to do this - trigger the VSTi drum machine with audio from one of your drum machines.

Now, I don't know if PG products can do this, but with the DAW I use, I can have audio and midi on the same track or I can have audio input on the track, but only send MIDI output.

There is a plugin called KT Drum Trigger: http://koen.smartelectronix.com/KTDrumTrigger/

Which takes in an audio stream, divides it into 3 different frequency ranges, and then when it sees activity in any of those ranges above a threshold amount, it triggers a MIDI note event for that range(s).

So, what you do is set up your audio output of whatever (I actually have 'beat-boxed' - taught the guy on the demo on Koen Tanghe's site) and you can get a simple 3 part drum machine pattern to result from your VSTi.

Lastly, now this doesn't work with PG products, but if you have Jamstix and a DAW that works with it's JAM mode, you can feed the audio out of the drum machine as a 'seed' to the Jam engine in Jamstix and let Jamstix pick drumming patterns for you.

I do this last one by feeding drum loop audio samples that I've chained together into Jamstix and then Jamstix adds accents and fills and general goodness along the way.

Good luck using the old machines. If they were about 15 years older, they would be worth quite a bit of money. (Roland TR series).