Google "Linux Samba".
If you old printer server, is not processing the printer output, but just taking the output of printer "driver" software on the XP boxes, then it's just a comms problem, connecting the printer.
Linux supports IPP, and the CUPS project supports most printers, using definition files.
FYI
http://www.linuxprinting.org/show_pr...amsung-ML-1740
Says that printer works perfectly!
I should do your tinkering with a comfortable Live CD for a bit. It seems a little wasteful of electricity (and noisy) to run a P3 just as a print server, though you'll find it should run recent Linux quite happily, so long as you have decent amount of RAM, and your graphics card has a driver (most do). Even 3D games like Tux Racer will be fine, so long as there's a supported 3D driver (Nvidia offer old legacy drivers which still work for example).
PS. Do burn a new disk, or update OS, and do an upgrade, Ubuntu 7.10 is stable and will run fine on P3. Linux is NOT VISTA!