You can install IIS from the Control Panel, but you might need a Windows operating system CD. Select Add and Remove Programs from the Control Panel, then click Add/Remove Windows Components, select the Internet Information Services check box, and click Next. You can then follow instructions to install IIS.
If IIS 5.0 or later is installed after the .NET Framework
2.0, you must register IIS with ASP.NET manually or reinstall the
.NET Framework 2.0. To manually register IIS with ASP.NET 2.0, go
to the .NET Framework 2.0 path, run aspnet_regiis.exe
-i
in the command line console, and restart IIS.
If you use IIS 7.0 for your Web applications and components, make sure you install the IIS 6 Compatibility Component and IIS 6 script tool.