internet printing problem

[Loren]

I am setting up printing over the internet from xp pro to
another xp pro machine.

I can successfully goto http://ipaddress/printers and
browse the printers on the machine.

I click on the specific printer

I click on the connect link on the left and it asks if I
want to connect to the printer.

I click yes -- it begins to act like it is working and
then just comes back access denied.

I have tried adding the iusr_machineName user to the
permissions of the shared printer, but to no avail.

Any suggestions -- I have tried all that I can think of.
The router is set to only forward traffic on port 80 -- I
don't know if I need another port open/forwarded....

Any help would be greatly appreciated.

Thanks,
Loren.