Yeah I know, that's why I'm nervous to just plug it in, and try.

If there are only two ports and only one fits...then I'm ok. But I don't want to be wrong and explode a can of refrigerant in my hand.

The ports are different sizes for a reason. Your kit will only fit the correct port.

Thanks Herc. I will try it then.

If my posts start looking like this "awefh[go8aweghagea" then you will know I plugged into the wrong port and am now typing with stubs.

I must be an idiot or something. I can't get it to work.

I do everything the instructions say, but the refrigerant won't leave the bottle.

Wouldn't the coolant leave the refill bottle even if the compressor is bad? Is it possible that a bad compressor is not "sucking" the refrigerant out of the bottle?

I would feel really dumb if I couldn't screw the hose onto the bottle properly, but I turned it as far as it will go, then I turned it a few more times until it clicked repeatedly.

How can I screw up something this simple?

To recap:
I start the car, turn the A/C on max, hook up the refill kit, and then turn the knob to allow the coolant to start flowing into the system. But, I waited for several minutes and the bottle is just as heavy as when I started.

sounds like you're doing it all right. as long as the hose on the car's fitting is on enough to open the port.
and hold the bottle upsidedown.

there should be a valve that sits on the top of the can... you screw it ALL the way down to punchture the can and then unscrew it slowly to open it up... and when the ref leaves the can, the can will get COLD, so you will know when it is going through

I'll dink around with it again tonight. Last night I got too frustrated and decided to hang a storm door instead.

It helped my bruised ego to at least be able to handle a drill. And, my door actually works!!