Animated armature doesn t want to follow a path by constraint -HELP

Hey guys. I would like to ask for help. I made two models with textures, armatures and animations of horse moves. The horses and their riders are separate objects. I want to add a path for them to move along. But when i try to do this (by adding constraint) , by selecting one armature, one rider and his staff (also separate object) one of the elements (the last selected - last time it was staff) goes away far from the horse at the end of a blue dotted line, and when i try to add the animation for the path - the blue dotted linne is the only thing which moves, aiming at the path. Please help me solve this. I want both horses to move along the path through 180 frames, moving their legs by that time.

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The location of the origin of the objects following the path and the origin of the path itself are important.
http://wiki.blender.org/index.php/Doc:2.6/Manual/Constraints/Relationship/Follow_Path

Thanks for advide Richard. But what do i have to do? (sorry maybe i can’t read but i am really new to blender :] ) And will is solve the problem of blue dotted line and no movement? Can i make multiple objects at once follow the path - also an armature?

Bump. Nobody can help?