How do I add an animated gif to my signature? This has to be simple. I'm a novice on most of this computer stuff. Thanks!

You edit your signature, then add a link for where the gif is hosted, just like you would link a picture in a thread. For instance, my photo link looks like this:
[ img ]http://www.homestead.com/barbv500/files/liesl_daisy_trim.jpg[ img ]

(I had to add spaces around the brackets or you would just see the picture.)

I can manage to attach a gif to a post as over in the testing forum, but these were from a page with several animated gifs which were offered for free use. I saved these to my computer to be able to post them as attachments. How do I select just one or two items from a page? Here's the link to the page so you can see what I mean.
http://www.labrador-resources.com/lab_graphics.html
Thanks.