Sounds like you want good old Testosterone. It's already being made in your testicles, you're just gonna inject more of it in.
But there are other things to consider, read up on "Post Cycle Therapy" before you go taking any steroids..
And before you do anything, listen to what these guys say about diet. You can't drive to Mexico if you haven't got gas in the tank.
You'll probably wanna read up on the generic list of steroid side-effects also so that you can make an educated, informed deicision:
http://www.steroid.com/side.php