You need to download IIS ASP for ISS. And you need to upload the Silkroad IIS files to your ISS website. Can be found on the internet.
use this:
You only need the "IIS : ASP" You search for it just type in ASP in the searchbar and download the file that seems similiar to that.
> > > > OR
You didnt setup ISS properly look for some "How to" Guides for VSRO files.
Make sure you also Have the right Billing_server in your
Serverfiles>server.cfg
should look similiar too
"http://192.168.0.1:80/"
(Split by : )
80 is the port
192.168.0.1 your ip