This BBS stays readable down to 540 pixels (unless someone writes a lot of monospaced text)

Can anyone think of a good fix for this, without totally bloating the BBS HTML that is spit out? Individual tables for each comment should fix it, but I'm not sure how much bloat it would introduce. The really bad part is that moderators and admins can't fix it either. I tried on my ext3 post that caused it to spew across the screen, and I simply can't reedit it without the BBS code making it worse.