Ok, I took your suggest about the drivers, as well as install process. During my many attempts, I suddenly developed the wonderful problem of the machine locking up when finding a device on COM3. The mouse would continue to work, but machine would hardlock, and pin the processor at 100%. The only thing to do is a hard shutdown, thus making the disk checks go bonkers upon reboot. Eventually, it developed the BSOD upon reboot...
So, to get around this, I did a fresh load of W2k SP4, format and everything. I tried once again to install the software, then add the hardware. Tried hardware first then software - and still no touchscreen.
I was able to stop the machine from locking up and crashing by disabling the com port in BIOS, which freed up COM3's IRQ. The software is running on the machine now, everything's connected and no errors - any tips at this point?
Upon further reading, and from Armen himself, there were a few batches that had problem in the start - I think I may have one of them. When I looked for a serial number, I found nothing on the sticker, so I'm a bit concerned at this point about what kind of support I'm going to get on this, other than here.