Get some new fonts installed from sites like fontmagic.com ... also you may want to blend owen into the background. Its good for a newbie though.
<div class="quote_poster">Big Aaron Wrote</div><div class="quote_post">Why must you turn this forum into a house of lies?!</div> it is that bad?
I don't know about the contrast on the owen image, also, take out the inner shadow on the text. The background looks ok though. It quite good for a beginner, just keep practising and you'll get better.
the sig is ok but you still need alot of practis. BTW the letters don't fit well whit the background, i would change that