The alphamap11.3.1.zip file you have requested: Modifications / Maps / Alpha Map (1.3.1) - 22.89kb is not available. Perhaps try browsing all files for the game World of Warcraft and upload any files you want to share or are missing. This is the only information we could locate:
To install: Simply unzip the file into your World of Warcraft directory.To Use: Go to your Key Bindings, scroll down to AlphaMap Key Bindings and bind the toggle to a key. I have mapped mine to Tab and moved my enemy selection to another key. This add-on acts as a transparent world map which appears over the screen.