Try disabling it and see what happens! Most of the stuff you find in the startup tab of msconfig is not critical.
Make sure you scan your computer with more than one antispyware program, try spybot as well as adaware. One catches what the other misses.
I am on a university LAN network for internet, using zone alarm 5
I have it on high security and it is blocking literally 5 things per second
Most of it is on ports 67, 137 and 138 which are dhcp and netbios, from different IP addresses every time, all along the UDP protocol