Model: AcerScan Prisa 640P
Operating System: Windows XP (Note: might work with other versions of this os.)
"Acer Peripherals (Acer CM) Has Changed its Name to BenQ "
There are also drivers for other OS, so check the links for your OS.
I'll have to install now over a 28.8K analogic modem using NetMeeting (first let's see how can I manage to drive the other person what is NetMeeting and how it works). So don't ask me to soon if it worked or not... )
All the best for all unlucky Prisa 640P "searchers".