Drum machine software help!!!!!

[starfox]

I just want to put beat track's down first to play guitar over so I dont have to concentrate on keeping the groove in my songs and can focus more on my playing! I've looked at hammerhead and acoustica beatcraft and I understand how these programs work but cannot get get the acceptable beats. Any advice. Whats the easiest way to set up these applications. or can I just get loops somewhere.