Adobe ImageReady (CS2 presumably)
Yeah, I told him over PM...but you had no way of knowing that.
...Would if I used another program?
ImageReady is the most common used program for creating animated .GIFs. Well, with people who are knowledged in computer graphics, atleast. I know there are smaller easy-to-use animators that usually have a preset shitty frame rate, but ImageReady would be the best guess for what you're using. And CS2 just happens to be the newest one, so there was a chance you'd be using it.