HELP! Car Won't Start!
 

When I try to start my car all I get is a weird repetitive beeping sound with the red driver's seat belt light flashing. The beep is the same type as the slow steady beep when you have the keys turned in the ignition without starting the engine yet but only it's beeping rapidly (kinda like power is cutting in and out). The seat belt light flashes at the same time as the beep sounds. When I tried buckling the seat belt the needles on the gauges moved up and then down. The radio won't turn on either. I still have the original battery (02 Camaro SS bought in October 2002. I was due for a new one about 4 years ago). I'm hoping that's the problem. Would a jump help? A whole new battery? (which I should get anyway). I'm away at school and parked in a pretty inconvenient location with no cell phone service. Any help or feedback would be appreciated. HELP!
Thanks in advance.

EDIT - Also, I noticed my odometer recently reset on its own, which it has done several times in the past.

I got a new battery but the connection for my positive terminal popped out of the old battery and i haven't been able to disconnect it. Also, I'm only working with a pair of pliers. Does anyone know what size wrenches I should be using.
Trying to jumpstart the car didn't work. The lights all come on normally then it sounds like it's gonna start up for a second and then everything dies.
HELP!

Wrench size for the battery terminals? I use a battery wrench from sears, has served me well for many years.

new battery im thinkin?

i want to say the battery terminal is a 3/8, but channel locks/ pliers will get it off.

it sounds more like a grounding issue than a dead battery from what you stated

better with metric than inches. battery terminals are 8 mm

yea i didnt wanta say but i thought it was 10mm? maybe on the 78 nova i had lol!!

Thanks for the help, everyone.
I know nothing about electrical systems. What do I have to do to check if there are any problems with grounds?

Changed the battery. Running fine now. Thanks for the help, everyone.

awesome i was right