Wow, cool idea! I'd love a copy if you don't mind, I'd love to see how you did that (I think I just put all that in the too-hard basket). My email's here.
Would you mind if I integrate it with the one we use and the template above, or bits of it, if at all possible? I figure that between everyone on the forum we can make an uber-tracker.
Does it need alot of formula insight to maintain?