Windows 2003 Server  

The group either has to be in the Power User or Administrators group. To assign them in that group, do the following:

1] Right-click My Computer, then go to Manage.

2] Expand Local Users and Groups, then double-click on Users.

3] Right-click the User you want to assign to the Adiministrator or Power Users group, then click on Properties.

4] In the Properties Window, click the Member Of tab.

5] Click on Add, then type in Administrator or Power Users. Click OK and close all the windows.

6] The user should now be a member of the Administrators or Power Users group, and he/she should be able to start and stop services.

Hope that helps! :)