I got it! With Tabuu Hex Editor, I made one almost replica of one Melee Events: Seconds, Anyone? It´s not a great thing, but is pretty cool:

<a href="http://www.youtube.com/watch?v=ijHt4o1jgSo" target="_blank" class="aeva_link bbc_link new_win">http://www.youtube.com/watch?v=ijHt4o1jgSo</a>

Sorry to make a request for this stage, I tried to use Stage Switcher, but every time I get this message: "Failed", and I read this tutorial: http://forums.kc-mm.com/index.php?topic=26269.0

I tried to expanding stages, but well.. I use Dolphin, and is impossible to expand stage...

Anyone have the .rel of the stage Poke Floats SS (by Eternal Yoshi and Mewtwo2000) working in Pokemon Stadium Melee or Stadium 2? Thanks, and sorry again.