door window weatherstrip replacement

I'm looking to replace all 4 door-to-window weatherstrips. These are the strips at the top of the doors that are 'fuzzy' and push against the window to wipe the water off the window (on the outside, at least!).

Has anyone done this? Can you give me pointers or suggestions? Any special tools needed? Do they just pull off? Screwed on? Rivoted on?

Rick

I got some (all?) of them at 50resto, and maybe a couple from texas mustang parts. I think that they were about $40 each, but it was a while ago and I don't really remember. Besides, with the way Ford parts change prices, they could be lower or higher now....

Thanks,
Rick