Under the sun

Well… I wanna build a side-scroller… and that’s as fast as my brain moves… forget the plot, drama and all that jizz…

I can’t AS for crap… ok, that’s a lie… if I put my mind to it, I might remember that “stop” action for the frames… What do you guys suggest I do? A crazy side scroller, that involves nthing but shooting random things that attack you ( perhaps a mail box?)…

Is there a side scroller engine I could modify and study to get the AS base and wire frame for my game?