New Post: VDir - putting it under non "Default Web Site"

I think I found answer here - http://blog.eldert.net/create-webservice-in-non-default-website-using-btdf/.
In IIS, right click Website - Manage WebSite, Advanced Settings, then ID is the number.

So far, I working on local deploy. For QA/PROD, I might need to as described here: https://biztalkdeployment.codeplex.com/discussions/237263

Neal