Movie film sounds or sound effects needed quickly!

I need to find a website or something to download that offers movie sounds or sound effects. Such as computer noises, gun shots, door slamming shut etc
thanks
Answer #1
I used to do a bit myself. http://fxhome.com/sounds/
http://www.soundsnap.com/browse
http://www.audionetworkplc.com/sound-effects
http://www.stonewashed.net/sfx.html
http://www.therecordist.com/free-sfx
http://www.freesound.org/index.php
Answer #2
A huge thankyou!
Answer #3
and from m2
Answer #4
Thank you very much this will help my friend get her media assignment done!