Car won't start please help!

Need more info. Is there power to the vehicle, ie radio works, lights come on etc? Does it crank when you turn the key? Depending on where you live, some of the wiring could have been eaten up by rodents, if your getting power and it cranks but no turn over; it is compression, fuel, or spark. answer back with more symptoms and I will see if I can help you narrow it down. I just put a whole car back together that had sat for 7 years in a field so maybe I can offer more assistance with more info.