Great! Thanks folks. Thats exactly what I needed. Very much appreciated! Once I've got it right, I might make it up and put up some pics, part lists and prices since a few people seem to be interested in this kind of thing.
PS: Here's my ammended diagram. How is it looking now? I think I followed what you were saying about the relay and the transistor. What about the LEDs? Will they be causing problems if I leave them there as they are now? Actually, both those LEDs will be showing the same thing wont they?