Can't load PHP's mcrypt extension?

After installing MySQL and PHP, both were working correctly and the only thing missing was to install phpMyAdmin. After downloading and unzipping the installation file I try to access the application through the browser and I get this error:

"Cannot load mcrypt extension"

This can be solved quite easily:

1. Open your php.ini file (e.g. c://php5/php.ini or c://windows/php.ini)
2. Find and uncomment "extension=php_mcrypt.dll", save the file.
3. Copy "libmcrypt.dll" from your php folder to "c://windows"
4. Restart the server

That's it!