alright i did my research and finally came up with a way to get kiddscape for mac (yay), so for all of you with mac computers, that want to play kiddscape, now you can. The guide is actually a website i found, it tells you everything you need to do.
you have to download a thing called the unarchiver
and another thing called dragonscape 508 (im not advertising this, its nessecary to run kiddscape)

both of these downloads and the guide are at this website here
http://play508mac.tk/
here is a video version of the guide incase the actual one is confusing
http://play508mac.webs.com/apps/videos/videos/show/5061696-how-to-play-runescape-private-508-servers
and in the guide it will say to enter in the servers ip, im not allowed to tell you the ip, so youll have to find it yourself, sorry.

and one final thing, once you get the gui to work, if you close it, you have to quit it and re run it for it to reapeer (i know this is confusing right now, but youll understand once you see it)

well good luck getting kiddscape for mac, heres the guide, and if you have any questions/complaints/suggestions,
post below, and ill try to help you out

You found a way? Nice job

thanks, hope it helps some people out there