XP Printer Vista Laptop...Nothing is working

Hi,

I've read, researched, broke down and went to Dell tech support and nothing.
I have an XP Machine with a printer attached and shared locally. I have a new
Vista Laptop that I want to use to connect to the printer on the network. I
have another laptop that runs XP and I have no problem.
I have done the suggested install the printer local and then connect to it
by creating a new port. The printer works when I connect it local to the
laptop, but "cannot communicate" when it is shared on the network. I can
share files all across the network, but not this printer. Printer is a Dell
946. Of course Dell suggested upgrading PC to Vista. That can't be the only
viable solution besides purchasing print server that actually sits on the
network.
Can Someone come up with something else that I may have overlooked? I've
read through all the threads here and other places (they all pretty much say
the same). Thanks in advance.
--
new old guy..