Been there, done that a zillion times.
So first, make sure the printer is “shared”. Next, make sure you add that printer to the computers being added to the network as “network printers” vs. local printers.
Also.....the real pisser........XP is NOTORIOUS for it’s networking/workgroups. You get ‘em all added, all set up, sharing devices, seeing each other in the workgroup, etc. etc..................and a day or week or month later..........it all goes to hell for no reason and you must do it all over again.
Don’t ask why. It’s a Windows thing. I’ve done this in our home on a wireless network for YEARS.
The two computers previously on the network do see each other. The one computer, C, is able to print wirelessly to the printer connected to V. In my view, that means that that printer already is set up to share.
Should I maybe think about re-installing the network wizard on V, the print server, even though theoretically I shouldn’t have to?