Hi Shquah,
Many congratulations for the Interview call!!
I will suggest that you visit the school for interview, if possible. Other than that be very clear abt you career goal.....be fully ready for what , why, why now type of questions on ur career goal and MBA. Interview will be arnd 30-40 mins with one of professors, who are very comfortable. So expect interview tol be comfortable.
let me know if you need to know anything extra.
Gud luck !!
Ravi