Extracting clamav-0.91.2.tar.gz

can any1 help and show how to extract clamav-0.91.2.tar.gz ?? im new here..i want to install clamav for my ubuntu 7.04 fiesty fawnif i use apt-get install clamav <--- old version 0.90please any1..i really need your help..TQ..

How to install codecs in kubuntu

i  installed kubuntu now and played my viedo file and mp3 file but it asking codecs but i am not having internet on my system and i downloaded codecs but i dont know how to install codecs pls help me

how to extract .tar.gz extension

i want to know how to extract tar.gz file and how to install it?