Collada with Papervision3D

Hi everyone,
i was trying to use papervision3d to import a collada file into a web page. it works!
And my Question is, can i force the edge of collada object? I mean, i need to know the length of an edge (a edge loop) of a part of my 3d model. can i do that? and how?
please help me… i really have no idea…
thanks before