1º You need to install the GTA of course ! Install it
2º Install The Gta San andreas program to play online here http://www.sa-mp.com/download.php
2.1º Install this program in the GTA folder ! its very important
3º Open the GTA SAMP its one program with this icon
4º Find Server of your country in this site
5º copy the server what you want and go to the GTA SAMP click in add server and past it !
6º enter in server and HAVE FUN
my video of GTA http://www.youtube.com/watch?v=bAhZYzMwYPo