cleaning up cookies ect..

im a recent macbook user i use to be a pc user..

my question is were do i go and do the disk fragment disk clean up on my macbook cant find how to do it im not familiar with settings on macbook yet ?
so it performs like new..

thanks

osx uses a different file system than windows which does not require a defrag....it does it by itself while your compy is on.

you can get rid of cookies and run some of os x's built in maintenance scripts by using programs such as onyX and\or macjanitor
-chris