I downloaded the 2012 Quickbooks accountant version, but need an installation key to use. How do I get this?
The software is on a shareware license, which means you will have to buy it. The package you've downloaded is actually a demo or a trial. These are offered for public to test the software before buying, but with limitations or a few functions.
I recommend using the Find a QuickBook Expert using the following link: http://proadvisor.intuit.com/search/index-standalone.html?v2#/
This way you will talk with someone that can give you more details about the software.