Using this tip, you can minimize the startup time of
windows XP and
Vista also. You can
disable some optional windows applications like windows messenger, Yahoo
messenger, QuickTime and many others auto startup programs that run
automatically when you start your computer.
Follow
the given steps to disable the windows auto run applications:
To use
this feature, you will need to be logged into your computer with
administrative rights.
Click
Start button and type msconfig in Run option then press Enter for
next.

A small
System Configuration Utility dialog box will appear with many options
like General, System.ini Win.ini, Boot.ini, Services, Startup and Tools.
Now
select Startup tab and uncheck the applications that you want to disable
from windows startup.

Now click on Apply button to implement the changes then click on Ok
button to end the configuration process.
Again close the all program and restart your computer after any
changes to go into effect.