Have you tried searching the forums? A quick 2-second search brought up many forums/threads, here is one of many: http://www.linuxquestions.org/questi...2-35-a-923596/
Have a look at the bottom of this page for 'Similar Threads'; you will probably have more luck searching around for exactly what you want, versus a guy like me guessing what you need, for what system, etc. Try searching harder next time! And also a rule of thumb, you should post what distro/system/etc you are using, along with a more detailed post.