File and Printer Sharing in Win XP

I have a small network with 4 PCs three are running win98 the forth is new and is running win XP Home. The XP home machine can see all computers in the workgroup the win 98 machines can’t see the xp machine. File and printer sharing is enabled andI have shared the printer and a document file. Internet firewall is not enabled on this network because of external firewall.

The win 98 machines can’t see the shared printer or file.

I can ping the xp machine from the other systems.

Any suggestion on sharing the Printer.