Shirley_Temple - I already offered you to help at the Request Thread. So, feel free to PM me.
I think there are many ways to do an animation with IR.
But the way you are doing it, you have to click on the little button at the right end of the animation window (underneath the exit-cross). Then go to copy frame. After that you have to click on the image you want to combine with your copied frame, and then click the little button again and go to paste frame... There are several options, in this case choose either paster after or paste before selection. You now should have two frames in your animation window. If you want to add new frames, you have to select another picture, copy the frame and paste it into the animation window you have worked on. And so on.
Hope this is not too confusing...