Still not starting

I took one of the spark plug leads off to check for a spark. The first one i took off sparked fine, gave myself a mighty fine shock haha! amatuer technician indeed. If one of them sparks does this mean that the rest should also spark?

I checked another one and couldn't see a spark. I got a new distributer cap and rotor arm from eurocarparts but they gave me the wrong ones which didn't fit!so correct one is on order supposedly.
A new ignition barrell does not seem that expensive but haynes says drilling is required to remove the old one? is this true? and if so how hard is this to do? Also this would involve getting a new key for the ignition, is there anyway of making a new barrel accepting the existing key? or make the door locks accept the new ignition key?
cheers for the help so far guys, need to get this cracked as its starting to really bug me!