3d multi user chat environment

i'm pretty much okay on flash/3d & actionscripting etc but i want to find out how to go about building a 3d chat world. any recommendations such as software/which scripting languages to look at /books/tut's would be really appreciated.

thanks

My own oppinion is that this a first-person-perspective 3d environment would be smoother in shockwave.
I find it however not that hard to make it if you think of the 3d environment as seen from above or sumthing, and swaping rooms.

what am I saying, of course it can be smoothly done in flash in first pers perspective... but not so detailed thou

yep ture like *****.com is done in shockwave