Continuous loop animation in slide

[Andersn2]

(PowerPoint 2002 in W 7) I have an opening slide to be displayed before the actual presentation starts. It contains several images which - through custom animation - appear in different places on the slide one after the other. I want this animation to run continuously (restarting from the start when it reaches the last image on the slide) until I click to move to the start of the actual presentation (next slide). But at present it just stops when it gets to the last image. How can I get it to loop continuously until I click to move to the next slide? Thanks. Jeff