chain effect connecting 2 mcs? Help.

[hooligan2001]

Hey guys/gals never posted here, i was wondering if you could help me out.

My problem is that i have a mc called screen which is a large computer screen. And i have 3 pipes which i want to make a chane type effect between a ground mc and the screen mc. But i dont know the math. The screen sort of floats around and i want the screen mc to be connected using these pipes to the ground mc and rotate and place the pole mcs accordinly. It's sort of hard to describe so i made a pic of what im getting at. Hopefully some one knows how its done. Ive seen it before.

Thanks in Advance