Then shut down each one you don't need in either MSCONFIG, if it is a program, or Services.msc if it is a service. Both of those are opened by typing them into the Run box in your start menu.
My personal favorite is Jusched.exe. That is Java Update. Why would you want a program running at all times that checks every 10 seconds or so for a Java update that only comes around once every 6 months or so?