[MotoxXx]

Ctrl+Alt+Delete and just shut down some processes.

If you want to prevent the programs from starting up everytime you reboot:
-Start
-Run
-type: msconfig
-click startup tab
-uncheck whatever you dont want to start during startup.
-click ok and then choose whether or not to restart.

You may want to go ahead and run a couple spyware-removal programs, a anti-virus scan, and maybe defragment if you haven't done so in a while.