Another hint:
The ideal size for an image (not thumbnail) posted directly in a thread is 550 pixels wide. Anything bigger than this will expand the forum. If you would like to paste a larger image directly into a post rather than a thumbnail, it would then be a good idea to resize your image to 550 width or less.
A great free tool for managing, resizing and compressing images is
IrFanView which has many wonderful features, perfect for beginners and experts alike.
This software is better than most commercial alteratives and is 100%
FREE 