Quick question

I'm new to photoshop. Ive only been using it for two weeks. I recently created something using the animation part. I wanted to know if there is anyway to set this animation as my signature on sythe and how would i do it?

 

Take a screen shot of your entire sig space then open it in photoshop set the background to sythes color and then save it as a GIF

 

Alright thanks!
When i upload picture I usually use imageshack or whatever do you have to do the same with GIFs?