43b7af74_vices_List___Overclockers_Club__Notes
[Service Name] Internet Connection Firewall and Internet Connection Sharing [Recommended Setting] Manual/Disable* [Notes] 
If your sharing your Internet access with other users on your network, leave this alone. Also, if you are using the Built-in Windows Firewall you should leave this alone. Otherwise if you are not using the built-in firewall (..but you are using another firewall I hope?) and you do not share your Internet access then you may disable this service.
Windows XP Services Removal Guide » Page 2 - Windows Services List - Overclockers Club
Notes