you have two chat programs open(Trillian, YPager), multimedia programs (winamp,iTunes), a file-sharing program(Shareaza) and some random software, others i've seen, others i haven't. first, close all programs that are running and you don't need. look in the system tray for icons you don't need. you shouldn't (and you can't) shutdown any processes used by the SYSTEM. you have a lot of unnecessary services running. go to Start->Run->type services.msc and disable services you don't use and don't want starting up.
also do a search online (i would but i'm sleepy and i'm leaning towards my bed) for a program called Startup.exe. its a nice little tool to configure your Startup items if msconfig is not an option(i.e. you're Windows 2000). if you can't find it, i'll put it on my ftp for you to get.
if my writing seems garblaed, please post any more question and i'll answer tomorrow.
goodnight and good luck!