Can't enable XP firewall on dialup connection

I have the same problem with trying to activate the XP
Home Firewall. The control panel says my (only) modem
is "disconnected". Go figure. Sorry I have no solution.
-----Original Message-----
I am having trouble activating the firewall on a dial up
connection in the XP consumer product. The machine
was "out of commission" for 9 months. The first time it
was online after being fixed it was infected with the
Blaster worm. The machine was cleaned up using the
Symantec tool, and the windows patch installed along
with
XP Service Pack1. However, I can't activate the XP
firewall. When I select the dialup connection and click
on "change settings", or right click on the dialup
connection and select "properties", nothing happens. I
can enable the firewall on the LAN and 1394 connections
without any problem. I tried deleting and recreating the
dialup connection, but still no success. Any suggestions
would be helpful.
.