when I was driving to work yesterday my car stopped on me the speedometer...

why did you buy a battery? what were the symtoms prior to the battery
purchase?

The lights flickering (air bag,radio, etc) tend to lean toward an intermittant open in the main power circuit Could be an internittant regulator in the alternator but usually if the alternator is goin south, a jump wont get you far. If the car went after the jump, My guess is faulty wiring, Check the battery terminals and associated wiring.