Make sure you keep the one that says HP***** whatever. Thats the monitor utility for your HP Printer. I got rid of that on my XP box, once I restarted i couldnt print anything and it corrupted the entire print driver. HP relies way to much on their software to be running in order for their printer to work. Keet that and systray and you should be safe to get rid of the rest.
Some of them are used for faster sturtup of some progs you have installed. I currently use win2000 so I can't tell you which services
you have to have in startup of winXP. It's safe to disable every service outside of windows directory..
Canuck4 is probably right. You can disable almost everything except systray, task scheduler, scanreg.. nothing bad can happen.
If you see some icons in your systray when you start windows you can go to options section of those progs and turn off "start with windows" option...
RealPlay is the annoying blue "real player' logo that starts next to your clock in the system tray. Its completely useless. Real Player will still launch when you need to play a Real media file even if that programming is not running in the background all the time.