43b7af74_vices_List___Overclockers_Club__Notes
[Service Name] Alerter [Recommended Setting] Disable [Notes] 
Notifies users of administrative alerts. You can use the Alerter service to have Performance Monitor send you a network pop-up message and/or run a program when one of the counters exceeds a preset threshold. You really should not have a need for this service. If you know what it is and what it does, then you will know to leave it on.
Windows XP Services Removal Guide » Page 2 - Windows Services List - Overclockers Club
Notes