New blog view?

Putting the head-aching-things aside, I decided to put up a new look for this blog,used about 2 hours fiddling on the html code.

Thanks to Beautiful Beta's guide, I created an extra sidebar, which means alot to me.

But only one thing.. can anyone teach me to move the side bar to the left of the main text?
Tried for a few hours and still no progress.

And 1 more thing, how could I put a background on the back?