Hey I posted that when I was very new to dashCommerce. I still have not yet accomplished this task, but I am pretty sure it would involve the following steps:
1) Create a stored procedure much like the one that fetches the category crumbs (use dashCommerce_Store_FetchCategoryBreadCrumbs as reference)
2) Regenerate all of the Subsonic stuff
3) Create the proper methods in Content/Controllers/PageController.cs (use Store/Controllers/CategoryController.cs as reference)
4) Wire everything together
Sorry I can't give you specifice code. As soon as I get this, I will post it here and will attempt to submit a patch (it needs to be in the base build). Just be aware that I am not actively working on this at the moment... so don't wait up all night for me to finish ;)
~Ryan