In order to make this tutorial, I had to first have a copy of WAMP running on my machine. While downloading and installing WAMP is out of the scope of this tutorial, it is rather easy and freely available as a software package for versions of Windows >=Windows XP.
After getting wamp, I had to download the project files for the Wordnet MySQL database from Sourceforge (thanks to Bernard Bou for making them available).
After getting the files, I edited mysql-wn-data.sql (only so that it would work on MySQL v 5.0 ^{as documented here}). There was also a minor tweak to remove some of the MySQL dump data so it would work on my Windows(WAMP) server in the PhpMyAdmin web app.
So to get you started, in using this tutorial, you must first prepare your software environment, then setup the project environment:
To setup the software environment, download and install wamp (you must be running windows to make use of this part of the tutorial). Make sure all services are "on" in wamp.
Next, to setup the project environment, first download the project files, then open my mysql-wn-schema.sql script here, or by saving it locally and using your favorite text editor, then copy all and paste all into phpmyadmin under "SQL" after you have created a new "wordnet30" database.
Once you have the database created and the table structure created, you can load in the mysql-wn-data.sql and hope all goes well.
To do that, I used the below in a windows command prompt:

cd C:\Documents and Settings\Anyone\My Documents\Downloads\mysql-wn-2.7.0
mysql -u root wordnet30 < mysql-wn-data.sql

Note, in order to use the mysql command, you will either have to execute the second command from the bin directory where your mysql.exe program is located or add it to the path, such as by typing:
C:\wamp\bin\mysql\mysql5.5.8\bin\mysql.exe -u root wordnet30 < mysql-wn-data.sql or by cd'ing to the bin directory and typing mysql -u root wordnet30 < path\to\downloaded_files\mysql-wn-data.sql.
If you've gotten this far, the rest is a breeze. You will just need to copy two files into your webserver directory (ie: C:\wamp\www):
index.html - view source and copy and paste verbatim, up unto the closing "form" tag.
and search.php - view source and copy and paste verbatim, then make appropriate edits.
You should be able to go to http://localhost/ and see the wordnet 'app' on your machine. Voila! Happy defining!
Update: you will want to turn off php display errors from the wamp system tray icon. Left click on WAMP->PHP->php settings->display errors