R – How to delete a sharepoint web application using stsadm tool

It's actually pretty straightforward, at the basic level:

• Create your ASPX pages with codebehinds in your own assembly - just like normal.
• Use the Sharepoint master pages (look at the existing ones to mimic their styles and markup)
• Create a Feature which adds a link to your "entry point" page(s) to the SP menu
• Deploy your assembly to the GAC

Yes, but the URL you pass into extendvsinwebfarm should have the port on it.

Using reflector it seems the Run method of the SPExtendVsInWebFarm class calls this: SPVirtualServer server = globalAdmin.ExtendVirtualServerInWebFarm(uri, virtualServerName, userTypedIn, appPoolId, bConfigurableAppPoolAccount, appPoolUserName, appPoolPassword, bAllowAnonymous, flag4);

The Uri that is passes has it's port extracted and that port is used to set up the web app.

Just tested this on our junk farm and so long as your url is in the form http://stuff:portnum then it all works.