From what I�ve heard about 70-552 (WinPRO) by people who have taken it, the exam is 90 questions with a 4 hour time limit. It is composed of three exams. You must pass all exams to pass 70-552. All three exams are taken at once. Studying for this exam is similar to studying for .NET Foundations, MCTS:Win, and MCPD:WinPRO exams. Don�t make the mistake of buying a book for 70�548 (WinPRO) and believe it will be enough. This exam is extremely difficult. Put aside the time and be thorough.
If I were going to upgrade, I’d elect not too. Given the length and difficultly of the upgrade exams, I would start from the bottom with .NET Foundations, go through MCTS and on to MCPD. If you are ready to take an MCPD upgrade exam, you should be able to pass .NET Foundations and an MCTS exam. Taking the exams seperately is a much less stressful environment than basically taking all three at once. You can also gauge your progress better since you have very targeted sections (each exam leading to MCPD) to take practice test against. Once you feel ready for one exam, take it, then proceed to the next in the same way. Taking them all at once for one upgrade exam is similar to taking a college course that only offers a comprehensive final. It’s do or die. Having the option, I’d avoid that scenario.
If you have an MCAD designation, the upgrade paths are:
70-552 – WinPro Upgrade (prep guide)
70-551 – WebPro Upgrade (prep guide)
70-553 – EA Pro Upgrade (prep guide)