Lenc324 - You're very welcome. Glad I could help.
Okay, for anyone else trying to insert an image, the process is pretty much the same everywhere.
First, obviously you need the image and it has to be sized in accordance with the guidelines established at wherever you are wanting to post it. If the image requires editing to conform to the guidelines, that usually requires an image editing program. Almost all digital cameras come with software that includes an editing program such as Adobe.
Next, you need to store all of your images somewhere other than your computer. This is called an Image Host. If you don't already have one, Photobucket serves that purpose and it is free for the smallest account.
After you upload your images from your computer to the image host, each image will now have its own unique URL assigned by the image host.
To add an image to your signature here, click on "User CP" at the top left.
Next, click on "Edit Signature"
Then click on the yellow envelope icon at the top.
In the box that pops up, copy & paste the URL of your image.
You should be good to go! Hope that helps!