Hello. You may want to also focus on a lot of brain-teaser questions such as why a manhole is round. Here is a website that has a few: http://www.princeton.edu/~canturk/puzzles.html Focus on personality questions. www.acetheinterview.com is also a good website. Usually big companies hiring permanents focus very much on appearance, and personality. I have never been interviewed by IBM, but this is what I heard, many puzzle questions to test your ability to think, good luck.