Support Information:
Device Type: Scanner
Manufacturer: Acer
Model: 640
Interface: Parallel Port
Operating System: Windows XP Professional
Age of Device: Not specified
FCCID:

Find it on DriverGuide (http://members.driverguide.com/index.php?action=srch&sm=b&aax=&qa6=17&qa5=17&qa7=1500&dp=3&qm0=640&jmd=and&fzz=d) | Find it with Google (http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=Acer+Scanner++640+Windows+XP+Professional+) | Research manufacturer Acer (http://members.driverguide.com/index.php?action=getinfo&companyid=17)

That would be a model 640P. There are numerous threads dealing with how to make this scanner work in Windows XP. Please read any of the Acer threads with a "P" in the model number.