Buu answered your question up there. I guess you should've asked how to do it ;)
On another note, grep was more than kind enough to provide you with some links, which you should have stumbled accross yourself.
That is why I implore you to read Before You Post ..., which grep points you to, In addition to reading How to RTFM.
You'll get answers a lot faster this way, and you'll be more independant, marketable....
I really do mean to sound like a broken wheel, but
everybody needs to know How to RTFM.