I have installed IIS 5.1 from the Win pro service pack 2 cd after installing the IIS 5.1 I tried the following link http://support.microsoft.com/default.aspx?id=823552 But I am not able to create IIS_WPG so I tried the other options you mentioned. When I opened the IIS Manager I was not able to find the Application Pool. Then I right click on the websites and then tried for service tab and I was not able to find the service tab. I am enclosing the screen shot of the same. Kindly advice what is wrong