That was great in my softimage Times....there was an integrated tool, that allows to animate everything from 2 to 8 feets....ideal for spider, insects aso. just had to select the legs in the right order ,a path, and the ground, and it walked down the path, the legs alwas on the surface, no matter how the ground was modeled,...then you had sliders to adjust how high the legs should be moved, how far they will move within one step, and lots of other sliders, to create f.ex. a drunken spider....was really great ;O)) I guess that was a bad motivation *g*