Question #1, manual window I assume?

I might have had one or two of them out over the years but it's been a while, so I can't say 100% if I'm remembering the correct setup. 

The best tips I can give you hopefully will help.

If you don't own one of these and have a Princess Auto near you, run over and buy one of these kits for 9 bucks. You won't be using it to remove window trim, you use it to hold the window up. 

With the door panel off, I remove the two bolts kind of rear/centre of the door that hold the short (approx 10" long channel) that the bottom roller slides in.

Then I loosen the 4 bolts that hold the regulator in. Don't remove them, just loosen them maybe 1 turn each. 

Now, take all those nice little red trim tools and use the ones with the curved ends. Use them as wedges between the glass and window seal. Put as many as you can in there. (You don't need to use these if you have someone to stand outside the door while you work at the inside of the door.)

Here is where my memory is fuzzy. I think the glass has 3 bolt/nut assemblies holding it to the channel on the bottom of the glass. I don't think you have to remove any of those nuts/bolts to slide the regulator rolers out of the end of the channel but I'm not positive. You will be able to see if those bolts/nuts interfere with the rollers right at the end of the channel. If they don't, you should be able to slide the rollers out of the ends of the channel and the other roller down lower is already free.

"Edit"

After I posted this I remembered this thread. If you go about 14 posts down from the top of the thread, there should be some helpful pics and info there-

https://canadianponcho.activeboard.com/t51837632/power-window-power-vent-power-lock-conversion/

4SPEED427 wrote:

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I know to put them back in, you put the top 2 rollers in the top channel, then slide the channel onto the bottom roller, install the 2 bolts in the bottom channel and then work the regulator around (seems to me wiggling it as well as cranking it) to get the 4 bolt holes lined up.

Once you do one they are not hard, (same as most jobs on old cars!)

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 Thanx Carl - appreciate your help....

Y I P P E E ........

Turns out the bottom channel was seized with hardened rust proofing....

Whatever it was it was put on 30+ years ago before we owned the 66.

After about fifty q-tips dipped in lacquer thinner I got it cleaned out.

Cleaned up the other channels as well, lubed up with lubriplate and the regulator is

now serviceable.........

Also found this on my shelf from 57 years ago, compliments of the GM dealership I was at.

Cleaned the felt and rubber channels, applied this and now it's like 1966 all over again.......

happy motoring everybody