On my XP, I download the ZIP file then:
Right-click on the Zip file, and select 'extract all'
Follow the small wizard thing.
Once unzipped, copy that folder in the zip folder
go to program files/AlamDV 2/plugins/ (or wherever ALAMDV is installed on your computer)
find the appropriate file that your plugin fits into...if there isnt one there, you can make a new folder.
Paste the copied plugin folder into the category.
Start up AlamDV
It should detect the new plugins, and just click 'ok'
It will install your plugins, and you can get to work.