Daniel

Check the following:
on the vista machine go to the command prompt (cmd)
In this environment, enter 'dir \\myXP\print$' where myXP is the hostname of
the XP machine. If all works out correctly, this should return the contents
of that directory. If it's not, you're having a network problem - and not a
printer problem.

Here's a solution:
On the XP machine
- enable the guest account
- create an account: user + password (exactly the same as on the vista
machine)

On the Vista machine
- create an account: user + password (exactly the same as on the XP machine)
- log on with this account
- Open the network environment (this should show the vista machine and the
myXP machine)
- double click on the myXP machine: the shared printer should show up. If
this is the case connect to the shared printer, and you're done...

I hope this will get it working! Daniel