[MetalGod]

Yes, I've considered this but there are several problems. First of all I'm not sure if the driver will work at all, since my master DAW is running Vista and there are no Vista drivers for this card. Second, with Cubase at least you can only have one ASIO driver active at the time. I could use the Multimedia or DirectX driver, but latency is bad enough with ASIO (20 ms in/30ms out).

Wun, I switched on the MTC send on the master PC and set the slave PC to sync from that. I still seem to be getting the same problem though. Even though each MIDI track is sending on separate channels on the master PC, on the slave PC all signals seem to be coming in on every channel.
This is how I have set it up. On the master PC I imported a MIDI file, which sets up a project with several MIDI tracks. I set the SW1000XG as output for all of them and set different channel for each track.
On the slave PC I start up Cubase and create a new project from the 16 tacks MIDI sequencer template (i.e. 16 MIDI tracks, one for each channel).
Now no matter what I do, even if I mute all but one channel on the master PC, all channels on the slave PC are receiving the signals. I guess I must still be doing something wrong, but does this seem like the right approach or should I be doing it some completly different way?

I'm going to take a more methodical approach and set up a MIDI project from scratch and try to work track by track until I figure it out. I must be making some basic mistake.

Anyway, thanks for the help guys.

MetalGod