OK. I assume you have some photos in your computer? Go to Paint on your computer (Start, All Programmes, Accessories, Paint) and Open your picture. Go to Stretch/Skew and resize it. Mine are 80 pixels high by 106 wide I think. Then open a Photobucket account, and upload your pictures into it.
You will see three thingies under each picture. You need to highlight the bottom one, right click on it and Copy. Then Paste it into the signature bit in your User Options in HHO.