Ok, here are some pictures. They are of the passenger rear quarter window, and I THINK the driver window regulator. I have forgotten already how they go back together...
I think what you were asking about are the two bolts on the bottom of the window there. They are both shoulder bolts. The one with the gasket goes into the slot in the window guide track, I believe. Or it might have been the other one.... Anyways, one to the window guide track, one to the regulator.
In hindsight, I really should have measured the length of the shoulder on these bolts for you, since you are looking to get similar hardware...my apologies. I will measure them and post the measurements. You should be able to get shoulder bolts easily enough.
www.mscdirect.com is a cheap source, if your local hardware store doesn't have them.
....Nevermind about the pictures, USB ports are fried on my computer. I am going to go try the laptop now.