how to set whether IIS returns index.html or localstart.asp

I have a small home network using Windows 2000 Server.  When I enter domainname.local in my browser it returns localhost.asp instead of index.html.  There must be some setting that tells it to expect an asp page, but I don't need that at all because I'm not using asp.  Please help me find where to change it so it returns index.html as the default.

I do have a Cold Fusion Server installed and started, but it's not active because the 30-day trial has expired.  I've tried stopping CF as a fix, altho I would expect it to be returning page.cfm of some sort if that were related.