Problem: My firewall (zone alarm) and it telling me that explorer.exe is trying to connect to 239.255.255.250 port 1900. Anybody know anything about this?
Possible Solution: Take a look at this MSKB article, it may help.
Q262458 - Description of Universal Plug and Play Features in Windows Me
http://support.microsoft.com/support/kb/articles/Q262/4/58.asp
Q276507 - How to Enable the Universal Plug and Play Feature in Windows Millennium Edition
http://support.microsoft.com/support/kb/articles/Q276/5/07.asp