Check this two threats from Isratrance, first one is a step by step tutorial to your full on bass written by Mike_a, second is the mother of all basses threat.
http://forum.isratrance.com/viewtopic.php/...c/53266/forum/2
http://forum.isratrance.com/viewtopic.php/...c/56391/forum/2
They are both to big to copy and paste them, sorry
Peace