VB.NET query

ok I have a little problem and I'm hoping someone may be able to suggest something.

I have a set of questions/answers in an array of 60. 1 of these questions is picked at random from the array and 4 corresponding 'answers' are also picked at random from the array and displayed as multiple choices. The 'right' answer to the displayed question is then placed at random into one of the choices (replacing one of the incorrect choices). Ok so far that works fine.

during some testing I noted that some of the questions from the array get asked more than once, so what I want to do is to stop a question that has already been asked from being asked again. I'm not sure how to do that in VB.NET - anyone any suggestions?

make a randomly generated array of the questions, then sequentially move through the generated list of questions, when you reach the end of the list you could have it stop or reshuffle the list :)

thats.... not a bad idea... mmm <thinks>.....

cheers - I'll come back to you in a bit :)