Drag along the path

I’ve got a problem.

Lets assume we have a guide line and an abstract object (round one) on the stage.

Task. To make that round object dragable along the path. By that I mean that in the end product I should be able to drag an object along the path (guide line?) and be able to stop the dragging at any convenient point of the guide.

question. How do I do it in Flash 8? :red:

If anyone know it, please contact me over my e-mail (arian_brother@rambler.ru) or post it here on this forum.

Best regards,
Arietz