Constant Inbound TCP Hits

As some of you know, I set up a home network between my Win2K and WinXP Home boxes a few weeks ago. At the time, I had to change the Norton firewall settings from block all to a more lenient configuration -- in order for the PCs to see each other.

The problem is -- Now, I am constantly being hit with inbound TCP requests on all sorts of ports (Win2K, my dial-up Internet machine, attached to network using DI-604). Every few minutes, Norton Firewall notifies me of inbound requests. I block all of them, of couse. The situation is VERY annoying.

Does anyone has suggestions on reconfiguring Norton so that I don't get these constant popups from the Firewall software?

THANKS for your help!