No problem, that's what the forums are here for <img src="smileys/smiley1.gif" border="0" align="middle" />
It sounds like you're looking for a mix of a few examples: 1. shooting bullets, 2. changing weapons, and 3.attaching weapon sprites to the image point of an object and pointing it in the direction of the base sprite.
I'll try and whip up an example if I get some time, but otherwise you can download the files from the URL in my signature below for a head-start <img src="smileys/smiley4.gif" border="0" align="middle" />