[_m3]

HP Precisionscan LAN http://h20015.www2.hp.com/en/documen...cName=bps02869

HP PrecisionScan LAN is a feature that allows a user on one PC to use the scanning software with a scanner attached to another PC. This feature is useful in workgroups where you want to share the scanner but the scanner is connected to another PC on your local area network (LAN).
HP PrecisionScan LAN requires two PCs: one connected to the scanner (host PC) and one that is not connected to the scanner (remote PC). Both PCs must be on the same LAN.

Linux:
http://www.penguin-breeder.org/?page=sane-net

saned is the SANE (Scanner Access Now Easy) daemon that allows remote clients to access image acquisition devices available on the local host. This has two advantages. First you can access one or even several scanners connected to your scanner server from different hosts. Second you can control access to the scanner by password based user authentication or grant access to parallel port scanners to non-root users.

Another thing you want saned for is to allow Windows boxes to access your scanner.