Support Information:
Device Type: Scanner
Manufacturer: Acer
Model: scanprisa 340p
Interface: Parallel Port
Operating System: Windows XP Home
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=scanprisa+340p&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++scanprisa+340p+Windows+XP+Home+) | Research manufacturer Acer (http://members.driverguide.com/index.php?action=getinfo&companyid=17)

Previously asked..... and answered. Please read before posting questions that have already been addressed in previous threads.
That's why we have a scanner forum.

How to install Acer/BenQ parallel port scanners in Windows XP

http://forums.driverguide.com/showthread.php?t=17300
or
http://forums.driverguide.com/showthread.php?t=43398
or
http://forums.driverguide.com/showthread.php?t=42168
or
http://forums.driverguide.com/showthread.php?t=41622
or
http://forums.driverguide.com/showthread.php?t=21560
or
http://forums.driverguide.com/showthread.php?t=35623
or
http://forums.driverguide.com/showthread.php?t=32417
or
http://forums.driverguide.com/showthread.php?t=24267
or
http://forums.driverguide.com/showthread.php?t=23463
or
http://forums.driverguide.com/showthread.php?t=18401