Vista - Vista problems printing to XP computer

Hi all,

I've read through the other threads on this and have seen the solutions suggested, but none of them are working.

1) I have a Lexmark 7350 installed and working on an XP Pro machine.
2) My computer is a Vista Home 64 bit machine.
3) They are successfully networked (I can read/modify files on the XP machine) so all the networking stuff is set up properly.
4) I have XP drivers installed on the XP machine, Vista drivers on the Vista machine.
5) In the Network window, I can see the "Lexmark" printer on the XP machine.
6) When I try to connect to it, I get an error thats says it can't resolve the network path or something to that effect.

I've tried the "install as a local printer, then add a new port", but when I try to add the port, same message, "can't resolve network path". It's like the printer doesn't exist but it's right there and I can see it on the network page. No typos or anything...

I've cleaned the printer drivers, reinstalled them, no dice. There's a "Microsoft XPS" something or other printer on the XP machine, just for kicks I tried adding that one and of course it worked. It's just the Lexmark printer it doesn't work for.

Any suggestions? I can see the damn thing, I just can't connect to it.