Use this page to ensure your GUID receiving script is set up correctly.
First, download and set up one of the GUID receiver scripts found on
this page.
Then, save this page to your site, and
edit it to change both occurrences of "clear.gif" to
the URL of your receiver script.
Now, when you view the newly edited page from your site, you will be
assigned a GUID. Reload the page to see your GUID.