As I'm new to all this PHP and MySQL (don't worry though - I'm a quick learner

), the mod will be simple to start with (no counting of smilies). It will however show the following:
A graph showing the [*Total Users/*New Users/Topics created/Replies/Viewings] for [everything/a board/a catergory] with a time axis showing [hours/days/weeks/months] (so you can view the entire history of your board) OR a (total / average) for each [hour of day/day of week/day of month/month of year] (for usage patterns).

* for whole board only as not board specific
These graphs will also be show values at the [bottom of bars/top of bars] or not at all.
There will also be the option of a broken y-axis.
Also the graphs will go UP the page instead of across!

I know this sounds a lot but these queries are quite similar and are the simplest to program (simpler than counting smilies anyway).
I think it will be best to create a simple working version first - then I can get feedback and use it to determine the path of development.
I need to check that all the date fields I need are present for this (I think so).