I had this problem upgrading from 32-bit to 64-bit vista. IE: how do you upgrade since you can't run the upgrade on a 32 bit system?
What you do is a two step process.
First, you boot the upgrade dvd, and when it prompts you to enter your product id, just don't enter anything and continue on. If you enter your product id now, it will say that it is only good to update, not a clean install. This will give you a working system that is not registered. You will have to pick which version of vista you bought.
Next, boot from the dvd again, and this time, you can enter the product id. The upgrade process will continue normally.
As a matter of interest, are there any limitations on using an academic version?
---good luck---
---good luck----