Alarm is armed and the car won't start?
 

My battery corrodes for some reason, if I forget to check on it, it won't charge and my battery drains. So yesterday, I went to start me car and say my displays were blank. Yep, dead battery. So I put it on the charger and cleaned the terminals. But now something has happened that didn't happen before. The car alarm is armed (I don't lock my doors, so I've never set the alarm), I open the door, it goes off. I can get it to stop from the passenger side, but not the driver side. But then, I stop it and try to start the car, not only will the car not even try to start, the alarm goes off again! I don't have an owner's manual for this car, the previous owner's had lost it (*grumbles*) and I'm not finding the answer on the net.