Just playing around, as I am sort of interested in being the secretary of this thread. Pinched some stuff off of a spreadsheet that totterdell did awhile back and just trying it out this weekend.
Might take me a few weeks to work it out, but here goes.
http://spreadsheets.google.com/ccc?key=0AvLvT-hbymYrdGZ5aWJGN0Fndk1XYlJibVBuUDJPb3c&hl=en_GB
