http://www.practiceboard.com/?3573149When you go to the listing page, before you choose to create a new listing, see the links for custom templates on the right. Click on the link to create a custom template and save the html from the practiceboard link in the box for making a new template.
Then when you list, click to add a template, choose custom from the box on the left and then choose your template.
I tested this one out and it saved for me as a custom template. Then I was able to go in and create a new listing and select it as the template for the ad with no problems. Let me know if it works for you so I can delete mine.