vbulletin board and doesn't have auto resize? I am surprised. When I had my forums I was using an IPB version 2 something, with auto-resizing.
(without having the members to buy bigger monitors)
Edit: there is a side button that closes the 'new threads/posts' column. Now that is better
Yeah I realize this will happen with smaller monitors. The largest width an image can be currently is 800px. I could make it smaller, but then people with larger monitors wouldn't see the image as well. The solution is to resize images depending on the user's monitor resolution. I haven't figured that part out yet. In the meantime, you can close that column