windshield install Q's

[jermasaurus]

A few weeks ago my windshield got blasted by a rock on the expressway and the cracks kept growing. I am going to install a used windshield over the weekend and was wondeing if anyone knew of some good instructions, or could just pass some advice on to me? I remember seeing a thread a while back, but can't find it without the search working. Was there something about using a rope to pull the lip of the seal or somthing like that?
-Jeremy