Most of the time, the problems with "knee jerking" and "ankle bending" are solved by getting the right combination of the Leg Lift and Stride settings in the walk designer. The walk designer is great for setting up the basic walk motions. It saves you from tediously doing it all by hand. Once you know your was around the animation graph editor, it won't be very to hard for you to fix the joint rotation or piviots that aren't right. To help keep things in perspective... '3DS Max' costs somthing like $3,500. The 'Character Studio' plugin goes a LONG way toward making animation easier for it. That'll cost you another $1,000!! But guess what... You STILL won't have anything resembling Poser's Walk Designer. I'm not saying that Poser is better for animation, tho. For what you paid, it's still a heck of a deal.