Ah yes! Go to run (that's in the start button at the bottom left, but I'm sure you knew that, so I'll stop sounding like a jerk talking to a 2-year old). and type in
msconfig
And of course from there (I'm sure you know this too, but just to be 100% safe and certain) jump over to the "Startup" tab, and well, I'm sure you definitely know what to do from here.
And there you go!