There are one or two other changes that need to be addressed too. The images will scale with whichever browser you are using up to a maximum size currently set at 1280 x 800 pixels. You do not need to resize your images, but you may still do so. If you choose to resize, may I suggest that you do so to 1280 x 800 pixels.
Because the new way of hosting images will re-size where necessary we have reduced the number of images you can upload in one go from 5 to 2. This is to ensure that we do not overload the server. We have however increased the number of images that can be show in a post from 5 to 10.
Please post any questions regarding his in this thread and we will do our best to answer them.