Yeah, I know it
should 
Well, F Me!
Actually managed to get WIN XP to see the trackball with some creative wiring and stuff*.. (With the original PCB, which works.)
Still, as soon as XP had recognized/detected the "mouse" it needed to "restart the machine to reboot to.." Tested it for a few seconds before restarting the machine, worked -> Yeah, right. Restart -> NOTHING! -> WTF!
?!??!?
* "Drain wire connected to shell of plug." (
http://www.traxsys.com/docGallery/295.PDF) Seems there really was no actual connection, so I added a jumper wire to connect to the shell on the PC's (female) connector ..worked.. TB recognized on XP, on restart; Again, nothing!
S.H.I.T.E.!
All out of ideas..
Psychotech.