Ok, I installed this and it works great on the images but the whole problem I was having hasn't gone away.
On this page,
http://forums.epicski.com/showthread.php?t=33971
the offending image was in post #6. As you can see, it's resized. If you're viewing the page with Firefox...it looks fine. If you're viewing the page in IE...the tables still blow out really wide and require much horizontal scrolling.
Any ideas what's going on here?