Last October we sent out vouchers for 40% off on upgrade exams 70-648 and 70-649 - to people who had completed their Windows Server 2003 cert and registered with us for the offer. If you are one of those people... make sure and use your voucher because it expires on April 30, at the end of this month. This is what your e-mail looked like, in case you need to go searching for it.
This is what a seated banana wearing an origami hat looks like, in case you need to go searching for that, instead.
If you don't have the code, you can still take these exams with second shot.