Ok some people seem to be having problems posting pics so here is some info.
1-AVATARS minimum size is 80x80 pixels and the largest is 111x111 pixels. So you can have a 111x80 or 80x80 or 111x111 or anything in between. Go To User Control Panel -Profile-Edit Avatar. You can upload direct to the site. Please note you will have to resize your image to the above sizes yourself. The board cant do that automatically. Any problems just ask me and ill help or do it for you.
2-PICTURES - I quite like hosting my images externally in a site like PHOTOBUCKET. There are many. When you do this you can just insert the image code into your text. Photobucket will resize for you
If however you do not want to use an external application then you can refer to JMUZZ post above and upload direct to the site by clicking on "UPLOAD ATTACHMENT" bellow the new post text box .1000 pixels on the long size of your image is about right. Select the image and hit the "ADD THE FILE" button.
Do a test here if you want to see how it will look.