Try editing your theme’s stylesheet(s).
I tryed but it all gets messed up
You’ll probably need to tell forum gurus which theme you are using, before the wizards will offer suggestions. Don’t forget that some themes (or developers) have their own sites, with their own forums, so you might find the answers there.
I’ve had the same problem in the past. I need a slightly wider width on my blog as well, so I’m about to tackle that problem again. I suspect I’ll need to change all sorts of things in the stylesheet, and maybe even muck with the code in places like the header (fear and trembling).
Good luck.
ll
