I'm not a programmer but... CROWD: YOU'RE RIGHT YOU'RE NOT A PROGRAMMER!!! I realize I've mixed like four different language syntaxes here but basically anytime a dial is set or a part moved this function would get called and the current frame for the current actor would need to get flagged as a key frame. Making a graphical interface for this wouldn't be too hard (Now THAT I've done in a day!). For each Frame in Frames For each Figure in AllFigures For each Actor in Actors For each Paramater in ActorParameters keyFlag = IsKeyFrameForThisParameter intFlag = interpolationMethodForThisParameter If keyFlag = False Then set x1 = previousKeyframe.ID set x2 = thisKeyframe.ID set x3 = nextKeyframe.ID set y1 = previousKeyframe.thisParam.Value set y3 = nextKeyframe.thisParam.Value Set ThisParam.intFlag = prevKeyframe.intFlag intervalX = x3 - x1 intervalXprime = x2 - x1 (blah blah blah if linear y = mx+b...) set thisParam.Value = y2 End if Loop Loop Loop Loop