Networking

I have a sbs 2003, active directory...domain is reliable..i have a mix of
windows xp pro systems....some are service pack 2, upgraded to service pack
3, and built to service pack 3. Problem is, on some of the systems when the
printer is installed, there list in directory doesnt become an option and i
can browse to the shared printer. have a service pack 2 system, installed a
new printer, listed in directory, and i can see it on all systems, regardless
of the service pack. one system in particular, upgraded to service pack 3,
no option to list in directory, and can not access it from any system. all
systems are in the domain, can see the server, and have a drive successfully
mapped any suggestions.....also i have to rename the systems for the
customer, and make the name more generic to the job function and not the
user......for example, the workstation will become inside-sale, username
quotes...and i have about 10 workstations that this needs to become
accomplished....and a side note, there is only 10 workstations, so i know im
not exceeding the 10 limit on the shared printers, because only 9 systems
would be attaching to any given workstation for its shared printer