How to change what appliaction start with windows ?

This is very easy question and im using this solution for all pc that i tune up for my friends.
Remember that most of apps got this option in settings "run at windows start up" so
you can do this without solution below but if they don't have that option you can use
described solution.

ok lest go:

start -> run -> msconfig

after run msconfig go to startup tab and uncheck apps
that You dont need to start with your windows

IMPORTANT !!!

disable startup of programs that u know is harmless.