Any idea about building 3D scene files?

Please tell me what all of you think about a 3D scene file! I’m not sure how to organize a scene file, in the most proper way. So, if anybody has any idea,(even links), pleasee!
P.S: my ISP is suck, too slow most of time, so if you don’t mind, mail me. Thanks!

You can use the VRML 97 format. It’s object oriented and it’s really fast to render this sort of file.

Hope that help …