If what you are talking about is that when you preview an image 800 + pixels in this website you see some of the image cut off on the right. You are correct!
I have been expereriencing the same problem since the last website upgrade. I don't have a solution for you, or for me. The confusing part is that I can see the complete images at work and not in my home computer, and yet both computers have 1024 pixels screen resolutions. The highest resolutions for my graphic card (Leadtek WinFast A6600GT THD) is 1024 pixels and it will not go higher; while in the work computer the images look fine at 1024 pixels and therefore there is no need to increase the resolution. How is that for confunsing?
I seem to remember that in the previous website (before the upgrade) there was a horizontal scroll bar that allowed moving the images left and right to get them in full view, but this horizontal scrolling bar is not available now. My solution has been to publish at 750 pixels and taking into consideration that I am not seeing the full image when when giving feedback.
But if any of you have a solution for this issue, I will be keen to put it in practice. However, I don't want to change the graphic card because my home computer is now 3 years old and I have already spent too much money in it abd photographic gear. I guess a possible solution could be to reduce the width of the right column or enable a horizontal scroll bar, but if this issue is confined to two or members only it might not be worth the bother.
PS I just realised the monitos (Benq FP567s) will not go over 1024 pixel resolution, so it is not just the graphic card.