The A/C problem is probably the AC relay....well known problem with the toyota family.....do a search on AC relay... you can buy it from Toyota, or get a generic one from autoparts houses....or if your inclined, open it and polish the contacts with your ladies emory board...as for the door, that too is an easy one.. the linkage between the outside door handle and the lock mech has come from together, this one takes a bit more work... but its still pretty easy. I will give you a step by step...
1. lower the offending doors window about 3-4 inches
2. disconnect the neg. term of the battery
3. remove the door trim, unplug the connectors on the back of the door
4. remove the door speaker
5. remove the 3 screws holding the inside door handle to the door
6. remove the dust cover from the door
7. remove the screw securing the weather strip to the back of the door
8. remove the weather strip across the top of door
9. remove the three 10 mm bolts that attach the window regulator to the window glass
10. carefully remove the window glass from the door by working the glass up and towards the rear of the car
11. look at the linkage that should be connected to door handle
12. replace the broken piece of plastic with a new one or like I did use a tie wrap (cable tie)
13. make sure the door unlocks from the outside, then reassemble the above.....
It sounds hard, but its easy, just lots of stuff you have to remove.
I will be replacing the window regulator on my 95 soon, and can take some pics of the various things and post them if you like
I have now idea how much the little plastic bit is, but lately little plastic bits have been rediculously expensive for what they are... a plastic spacer for my ranger tranny shift lever was over 140.00 from Ol. Henry....BTW it works just fine without it...LOL, if you have any questions feel free to pm me... or post them here good luck.... its a lot of little detail things... but its not really hard... the only tools you need is a 10mm socket, a phillips head screwdriver and a small flat blade screwdriver, a bit of patience and about an hour .... go for it ...
here is the part no. for the plastic clip 69293-12040.