Hi KABLOOET and Welcome
Strictly speaking,you don't really have to have anything in startup.I find that it's not that difficult to start programs when I need them and stop them when I'm done with them.
The only things I allow to start on bootup on my machine are my Antivirusand firewall.
First: See the pinned article
at the top of the XP forum
You can also go here:http://www.blackviper.com/WinXP/servicecfg.htm
and check out the service configurations
There are a lot of services that you can disable to help your system
run better and faster