2000 Alero keeps dying on me

My Alero has been starting fine, then today it dies in the parking lot at work and when I started it back it dies in two seconds...someone says it's the security system and something about the key not being recognized by the car's system....and the gauge cluster has quit, no tach, no temp, no nothing but idiot lights, what gives? Can I bypass this system or co I have to pay GM thousands to fix it?

I have heard someone putting the key on for at least 15 minutes and the security light should turn OFF, and then they are able to start the vehicle normally without the engine dying.

Hey.....guess what the car just started and has been running ever since....maybe GM has installed an instant fix it program into it's vehicles that no one else knows about except the parts managers and shop bosses.....thanks for the replies and God Bless.