network printing

samsung sx 1150 printer (multifunction)network problem,used as printer sharing,not giving print to other computer,( pc communication error ).installed all softwares in all pc’s and showing network port ok.It is pear to pear network using win98 Os between three PCs
another printer connected to Computer1 is shared and working perfectly with all the computers but if I connect samsung 1150 to the same(Computer1)
it prints locally but not with another two PCs.
Printer interface is usb and parellel so that i cant add another tcp/ip port.