Has Anyone Done Addax Aptitude Test Before Or Is Going?

Please does anyone know bout this stuff coming up on the 30th of this month? I and several friends' names bumped out of the list released earlier this month and the test is coming up on the 30th of this month, August. I don't know if it's first of it's kind or it's been long but i would appreciate anyone to tell me how the test goes on if he/she has done one before.

Thanks in advance peeps, 

check The Guardian Newspaper dated 19th August, 2008.