well, there is a new dbz rpg! its called Saiyan Xtreme! if u want to sign up for it, go to http://angelfire.lycos.com/nj3/Vegettosrpg)
and click on "join the rpg" to find out how u can join! it may take a while for the webmasters to put u on the rpg, but remember, its a new rpg. there are only a couple of experencied people on the rpg, so they will gladly offer u advice on how to play. and if u still dont understand, click on its message boards to get an idea on how to play the game!