It involves exactly what GAPAN say it involves. There are no extra tests sprung on you and it is all relatively informal and relaxed.
I would say the best way to prepare is to get into the habbit of remembering numbers and play plenty of arcade/computer games to improve your reaction and co-ordination skills.
Good luck,
VFE.
[This message has been edited by VFE (edited 11 June 2001).]