Why not make a park out of it, then upload it (make sure you include the scenery in the parkfile by going to options and ticking the checkbox at the bottom that let's you export the custom objects) BTW, make sure the file is a zip before you upload.
Thanks! Just uploaded it. It's a park called Toon Town. I accidentally listed it as a new park but its actually a saved game. If I get enough possative feedback, I'll make new stuff.