<p>OK, so the collegeboard says:</p>
<p>Test Date Change
If necessary, you can change your test date. Once the change is made, another Admission Ticket will be sent to you. IF YOU MISS THE DEADLINE FOR MAKING A CHANGE, you can still try to make the change ON THE DAY OF THE TEST.(?) Go early to the test center of your choice and explain the situation to the test supervisor. If space and materials are available, you will be admitted before standbys.</p>
<p>well, I'm not sure how this works. If I want to change the test date from tomorrow to November 4, 2006 (and obviously I already passed the deadline to make this change which is the wednesday 2 1/2 weeks before the test date), does it mean that I can just go to the test center of my choice on Nov 4 and tell the supervisor that I did not take the test I registered for in June and now I want to make it up that day??</p>