I'm pretty sure he wanted the green signature to be animated, which is why a GIF was out of the question.
A gif can easily be created with microsoft gif animator. Download it. It's free and easy to use. Then, while you have it up, copy your sig. Go over to the paste button in the top bar of the animator, and it will show up in the box. Then, copy your second sig and do the same. It will show up in a second box. To set the time for each picture to stay up for, click the picture in the box, then click on the work "image" in the tabs. Go down to duration and change it to a higher number. Repeat with the second picture. If you want it to fade in and out, edit it at photobucket.com. There is a trasparency button. Fade it a little bit, and save a copy. Then paste that in the box inbetween the pictures. Fade it a little more, save a copy, and set that inbetween the pictures. Eventually you will get it right. Here's something i made with the program. He blinks. And yes, you can edit sigs with gif. Maybe i'll try and do it for you tomarrow, but right now, I'm going to bed. It's 11 08
This problem has been resolved. He's using a signature rotator, and as I've already stated, the type of GIF animation he wants would be 12 megabytes, which is completely ridiculous. End of thread.