I found this site that looks to have a good variety

info on it-
http://vlaurie.com/index.html

also this one-
http://www.blackviper.com/WinXP/servicecfg.htm
-I used the suggestions for "safe " settings of services on this site and no problems it went fine - we did have lots of extra stuff running on the laptop.

I haven't checked my main puter - but it is running fine - laptop was slow