I came accross someonw with the same problem on another forum, he was told to do the following:
You need to do SSI within an Active Server Page (one with the .asp extension). Or alternatively, you need to tell IIS that it should analyze and process .htm pages before it gets sent down to the client. To do that, you need to:
1. Start up Internet Service Manager
2. Select the web site you want to do the processing on
3. Right click on it and select Properties
4. Select Home Directory
5. If necessary, create an application
6. Press Configuration
7. Select .asp and press Edit
8. Copy down the information in the dialog
9. Press Cancel
10. Press Add
11. Use the file extension .htm, use all the other information that you copied down in step 8
12. Press OK to all the dialogs
13. Restart IIS for good measure
I did this, no luck
![sad7 :(](https://psx5central.com/community/Smileys/PSX4Central/sad7.gif)