Hi Captain Nemo,
That's easy for you to say!

I meant that in the nicest possible way

its just that I am incredibly daft where maths and numbers are concerned, would you know if there are any tools on the Internet that might help me in attempting to do this
Thanks for trying to help me though
I'm trying to take it in and in about a years time it might sink in

The only way I have been doing it is literally guessing, and to be fair it worked once! but since then nothing, maybe the AI knows that I am hopeless and so goes along its route without worrying

2+2 is about as far as I can go, well maybe a bit better than that

UM onboard the U-100