If you are planning on writing a Microsoft certification exam, you might want to wait until September 15th when you can apply for the second chance. Same rules as before, go to Microsoft’s site and register before writing the exam, get a code and use that code when checking out of booking the exam with Prometric.
All the information on it can be found on Prometric’s site. http://www.prometric.com/microsoft/2ndchance. Trika, who is fresh back from New Zealand, also has some information posted on her blog. http://blogs.msdn.com/trika/archive/2007/09/05/2nd-chance-exam-offer-extravaganza.aspx
Good luck if you’re writing.