Well, I have a Umax Astra 600S from about 1 1/2 years ago, which is a scsi scanner... I downloaded Umax's VistaScan and MagicScan dortware from their site... both work great and some do better things than others... Included with them, is a control panel/extention that puts your scanner on your Local area network... My Home Network consist of a G4, Blueberry 333Mhz imac, an ancient performa 460, and my Power Mac 6400... I networked them on an ethernet network being controlled by appletalk.... First, you need an understanding on how to get Apple talk working. Once you are networking your machines properly, install the Umax software on the machine you want to scan on. make sure you install the scanning network extentions on both computers. The computer hooked to the scanner must be using a SCSi scanner.. I don't know about USB scanners, since the software looks at your scsi devices for a scanner..
I might of confused you, so if you have any problems, e-mail me... Michael@dj-net.com
Also, it helps to have UMax's Software & a Umax SCSI scanner...
Mike.