Printer Sharing

Dear All,
I have a printer connected to a PC, which is in the network. there are totally 8 PCs in this network and all are joined to a single domain. And all are logging under one user name “ABC” and no password. Now i want to share this printer to all the other PCs. After I installed this printer directly to a PC, I shared the printer thru its properties. Now, when I am going to other PCs and trying to connect (install) this printer, thru add printer from a network path, its asking for a user name and password, which username and password I shud put here…. Thanx in advance guys….
Please lemme know