advanced-cache.php link does not exist

I just finished installing WP-Cache and I am having some issues getting it to work. I copied the WP-Cache folder to the plugins folder and activated it. However, when I WP-Cache manager I get an error message. See below:

advanced-cache.php link does not exist
Create it by executing:
ln -s /potm/wp-content/plugins/wp-cache/wp-cache-phase1.php /potm/wp-content/advanced-cache.php
in your server

Cannot continue… fix previous problems and retry.

I dont have an advanced-cache.php file and how would I be able to create that link when I get that file?

Thank you