aling biped footsteps to uneven terrain

dont know have been loking hard for it. be it script or plugin. i also tried with the aling tool in 3ds max. but it seems tha biped footsteps are some kind of VIP objects. i mean. u cant do nothing with them .( almost)

and scripters shuld know. what kind of object is a biped footstep?
i mean is it a spline? ,mesh? proxy? of what?

i remember trying to convert it to editable mesh( in one of those maniac, desperados
moments) hehe.
and nothing. i cant remember what happend . i will check again now. but ok.
a few info would be apreciated.

by the wat softimage does haves that feature. aldo CAT plugin for 3ds max.
the thing if you wonder is that i don whanto to learn all that stuff of dealing with CAt.

cant ripp it? hehe-- i mean see the code and put it into biped?
or something like that.
well see you good fellas