wilco,
i thought i already posted the solution...
you got no chance but copy the entire content(!) of the CfgMovesMC class into your own class.
that would be:
class CfgMovesMymoves
{
//entire content of cfgMovesMC class
};
then specifie the path to your own animation for those u want to replace.
to make a unit use it add to your cfgVehicles:
class cfgVehicles
{
//blabla
class mysoldier : SoldierWB