Summagraphis Digitizer Tablet and Windows XP Driver

I have MM1201 Digitiser from Summagraphics, and would like
to make a driver to use it. I can't afford to buy a new
tablet.. besides this one STILL WORKS PERFECTLY FINE.

I am getting sick of "needing" to upgrade because of _fill
the blank in_ product(s) no longer support something.

Can anyone point me in the direction I would require so as
to get a driver of my own started? I need it to work with
AutoCAD 2004 and Windows XP.

Tablet Drviers that are current are not recognizing the
MM1201 tablet properly, or assign improper values to it's
IRQ or COM port. Others are "corrected" then lost when the
mouse is polled to be one port 1.

Any help would be appreeiciated.