Hi
Maybe this can Help.
Make sure that the Software Firewall on each computer allows free local traffic. If you use 3rd party Firewall On, Vista/XP Native Firewall should be Off, and the active Firewall has to adjusted to your Network IP numbers on what is some time called the
Trusted Zone (consult your 3rd Party Firewall instructions).
General example, http://www.ezlan.net/faq#trusted
Please Note that some 3rd party Software Firewalls keep blocking aspects of Local Traffic even it they are turned Off (disabled). If possible configure the Firewall correctly, or totally uninstall it to allow clean flow of local network traffic. If the 3rd
party software is uninstalled or disables, make sure that Windows native Firewall is On .
Windows XP File Sharing - http://support.microsoft.com/default.aspx?scid=kb;en-us;304040
Printer Sharing XP - http://www.microsoft.com/windowsxp/using/networking/expert/honeycutt_july2.mspx
Windows Native Firewall setting for Sharing XP -http://support.microsoft.com/kb/875357
In Win XP pro you can Visually see the Permission/Security setting, and configure them to your liking.
http://www.microsoft.com/windowsxp/using/security/learnmore/accesscontrol.mspx#securityTab
When finished with the setting of the system it is advisable to Reboot all the hardware including the Router and all computers involved.
Jack-MVP Windows Networking. WWW.EZLAN.NET