Print servers showing up as computers

I have two 1 port USB print servers. Worked fine under XP, now I've upgraded
(?) to Vista. Each creates a port that I can connect a printer to. Each is
set up properly, and I was able to print to each after set-up.
After I shut the computer off, each printer now shows as offline.
Also, each print sever shows up in the network as both a print server, and a
computer with a printer attached. How do I get rid of the extra computers, as
I think this might make life easier. I have found no way to remove computers
from the network.
Thanks. rdgreeen