>>70952I don't have a good answer for that. You could try what Bump-man was talking about. For the GIF in the tutorial that shows "Indexed" vs. "Not Indexed," I opened up the Layers tool and created a new layer that was transparent except a text box, put in my text, made a copy of the layer and changed the text, then put each text layer over an image layer and merged down.
Obviously, that would be a ton of work in a GIF that has more than two images total!
P.S. - If you want to know how to manually set the times each frame is shown, check out Step 3 of:
http://www.gimp.org/tutorials/Simple_Animations/Source:
https://www.youtube.com/watch?v=W0X0cmQAdSE