Do you mean that out of 89 services, 36 are set to Automatic as DEFAULT, but, we MAY only need 5 running? In short, yes.
More detail on XP Service decriptions and dependencies can be found at:
http://www.blkviper.com/WinXP/service411.htm
Suggested configurations for tuning internet gateway and gaming systems can be found at:
http://www.blkviper.com/WinXP/servicecfg.htm
