Slim,
Take off one of your spark plug leads, jam a screwdriver in there and have someone crank the engine over whilst you hang onto the handle and hold the metal shaft of the screwdriver near some clean metal in the engine bay that is earthed, like a nut ot a bolt on the engine itself. Hold it only about 1mm away and look for any sparks jumping between the screwdriver and the earth point that you are holding it near.
This will tell you whether you are getting a spark.
The engine needs 3 things to run. These being compression, fuel and a spark. It's just an elimination process to work out what is wrong!
Post back what you find and we can then try and help you further.
p.s. don't hang on to the metal of the screwdriver, or you will get a boot!
Dan.