First off hold down CTRL, ALT then hit DEL, this will bring up your task manager, click the
processes tab, then click where it says
username which should bring everything that is active under your username to the top, if it doesn't hit it again, it basically lists them in alphabetical order, find the process that you are not happy with and right click it and then click
end task then follow the prompt to shut it down, if you shut down the ones you do not want then look in the bottom right they "may" still be there, just hover your mouse button over the icons and they'll disappear.
Secondly go to
start menu, then click
run , when you get the run prompt up type in
msconfig , then when you get this program up click the end tab which should be
start-up , then look down the list and find the said programs you are unhappy with, untick them and click ok, follow the prompt to reboot your PC, you should now find they won't boot, if they have then you have either clicked the wrong programs or they don't like the command, I would be surprised if it did not work, when you reboot you will get a message saying something like "you have edited blah blah etc, tick the little box that asks for this to be ignored and get rid of it, let us know if it works
If you want to run the programs that you told your PC not to boot up all you do is restart them from your start menu & Programs
Hope this helps
Dean