Theres so many things that can cause a car not to start, can you smell petrol after trying to start? if so start with checking the spark side of things, if you dont smell gas find the fuel filter and follow the fuel hose to the fuel rail and squeeze the hose while some one turns the ignition on without starting. You should feel the hose expand when the ignition is turned to the on position, if it does then the fuel pump is doing its job. Like i said it could be alot of things but this is a good place to start. Is it multi coil set up?