Gene,
We have our main scanner attached to our main AC computer, and that is where most of the scanning is done. I have set it up so that we can access all of the Paperport files from every computer.
We also have a networked Brother multifunction machine (go ahead, make fun of that too!) and we can scan from it as well to Paperport on any of the computers.
I don't know about a scanner hooked directly to another computer.
