Ace! Thanks Gix. I have inkscape on my computer, but I have barely touched it since downloading it.
It's so complicated! I need to grow and pair and get stuck in. In fact, now that you have mentioned that it can "auto trace" I think I will look into it a bit more! Thanks mate!
It's actually pretty easy to use the auto trace feature, especially if you're working in black and white which it sounds like you are going to be.
I'd have be looking at the program to give you a proper walk through and my daughter just woke me up, but I'll see what I can come up with later today.