Ordering

How many ACCUPLACER test units should I order?
What payment types can be used to order units?
How do I order ACCUPLACER test units and how long will it take for my order to be processed?
I would like to place an order, but don't know my Institution or Site ID. How do I find it?
When ordering test units, how do I ensure that my test units are placed in the appropriate location for immediate use?