I have it too, but I played it the last time 3 months ago. (EDIT: Now ^^)
I have a own forum for this game, for german people (PM me if you want the link).
I'm registered in the 72dpiforum (offical SMWar forum) as yoshi_the_best.
My best work until today is the Art Island World. It uses the Art Tileset
, and the levels are smileys. You can download it here
EDIT 2: Do you know how to unlock A SECRET GAME MODE? I say only: konami code...