Create an event named "IPLog". Set the Type to "Recurring" or you can use other HomeSeer functionality that you're familiar with to execute this event.

Trigger tab

On the "Scripts/Speech" tab, tell it to run the following script statement:

&hs.GetURL "www.x10.crevier.org", "/ip/logip.cgi?user=your_userid_here", 0, 80
(You may want to copy and paste the above line, to help prevent typos.)

Scripts/Speech tab