When was the last tune up done? When was the last time you drove it? You do know Gasoline Evaporates, right? Sounds more like a dead battery, batteries like to not work if they sit for a long time. Give it a nice jump and keep the car running for awhile. As for the A/C, go get a tune up and have them look at that at the same time. Do you use your A/C when you do drive the car? If it sits there for a long time, the freon will eventually go bad. I had the same problem in my Peugeot, I didn't drive the car for a long time and the A/C didn't work cause I never used it. I would image it just needs to be recharged. Also, welcome to the club!!!