When using Microsoft IIS for your web site, some configurations require you to add a new MIME type to allow the server to deliver Hyprecosm applet (.hcvm) files. This article describes how to add a new MIME type using IIS.
Step 1: Start Internet Information Services (IIS) Manager
Go to the Start menu, then to "Programs" and "Administrative Tools". Click on the menu item labelled "Internet Information Services (IIS) Manager" as shown below:
Step 2: Select a Web Site to Configure
Using the IIS Manager dialog box, select a web site to configure from panel on the left as shown below:
Step 3: Select "Properties"
After selecting a web site, right click which will bring up a popup menu. From the popup menu, select the menu item labelled "Properties".
Step 4: Click the "HTTP Headers" Tab
After selecting "Properties", a dialog box will appear as shown below. At the top of this dialog box, click the tab labelled "HTTP Headers".
Step 5: Click "MIME Types" Button
On the "HTTP Headers" tab, at the bottom right side of the dialog box you will see a button labelled "MIME Types...". Click this button.
Step 6: Add a new MIME Type
After you click the "MIME Types" button, a dialog box showing the registered MIME types will appear as shown below. To add a new MIME type, click the "New..." button.
Step 7: Enter the MIME Type Information
After clicking the "New..." button, a small dialog box will appear as shown below. There are two fields that should be entered to define a new MIME type.
For "Extension", enter ".hcvm".
For "MIME type", enter "application/hypercosm".
Step 8: Verify that the new MIME type has been added.
After entering the MIME type information, click the "Ok". button. On the MIME Types dialob box, you should now see the new MIME type that you have just added as shown below.

You may need to restart the IIS service for the MIME type to begin working. To restart the IIS service, please follow these steps: Click Start, select Programs, and then click Command Prompt. Type "iisreset" and press Enter. This will restart the IIS service.