For installing IIS in your vista operating system firstly you will need knowing this, that IIS not come with all vista flavors.

- Windows Vista Business, Enterprise and Ultimate come with IIS 7

- Windows Vista Home Premium comes with IIS 7

- Windows Vista Home Edition does not support PWS or IIS

If you find that, your vista comes with IIS.

Then, go to Control Panel, and then click on Programs. And click on “Turn Windows features on or off” link in Programs and Feature section.

Select Internet information services check box and then click ok button and wait (Times depends on your system & hardware Configuration)

Now open your browser and type localhost and enter, you’ll see the new default page like this…

If you want to test or run your .asp file

open this location C:\inetpub\wwwroot

Now copy your .asp file on this location and after this, open your browser and type your address such as -

http://localhost/filename.asp

or

http://127.0.0.1/filename.asp