Here you go. I got it with a keyboard.
It is a ball mouse, and I have never opened it up or tried to fix it. If it needed a driver for the pointer, I did not have it.
It may well even have worked properly all along, and I just did not have a driver for the optional bits.
$5 + shipping for anybody who wants it.
I have two of these. Was going to take them apart and use the trackpoint in a mod, haven't gotten around to it...
Plugging it in via a USB converter, the trackpoint acts like a scrollwheel, not a trackpoint. Hover the pointer over a webpage, pull the pointer toward you, it scrolls down, etc.
I don't know if you got a different driver for it if it would act like a true trackpoint.