>>>Hi,
>>>
>>>I have installed an ASP.NET application on the customer web server (new virtual server). The application is using form authentication. Now I need to tell them to make the pages of the application available/accessible from any place on the Internet. What specifically would they (the IT of the customer) have to do to make it happen?
>>
>>In essence:
>>(a) Make sure the IP address of the web server is accessible on the Internet.
>>(b) Tell potential users the address.
>>
>>But I don't think you've asked the right question :-}
>
>Should my question have been "how to make the IP address of the web server accessible on the Internet"?

I guess so :-}

>How do you do it?

I see Al has given a pretty comprehensive answer. Presumably you have good reasons to host the web site on a machine at the clients premises rather then using an ISP ?