1. Open the SharePoint 3.0 Central Administration console from the Start Menu.
2. Once the SharePoint 3.0 Central Administration console is open, click on the Application Management tab which opens to display all of the various options for managing your SharePoint installation.
3. Under the SharePoint Web Application Management heading, click on the Create or Extend Web application.
4. The Create or Extend Web application page appears with two options. Choose Create a new Web application.
5. After clicking the Create a new Web application link, the Create New Web Application page appears displaying various necessary fields for details about the web application that is being created. Here is a brief summary of the important fields of this page.
o Chose the Create a new IIS web site and in the description, name it “DPMRecoveryWebApplication”.
o In the Port field, give it a unique port which is not shared by any other internal application.
o The Host Header and Path fields can remain unchanged.
o Scroll down to the radio button Create new application pool and in the Application pool name box, note that the entry name includes the port number and the SharePoint recovery server name.
o Under the Select a security account for this application pool, select the Configurable radio button and type in a suitable account and password in the fields that follow.
This is the last entry to make before hitting OK to have the web application created. Upon completion of the DPMRecoveryWebApplication web application, Application Created screen appears. At this point, schedule time to run ‘iisreset /noforce’.
If you have any queries/questions regarding the above mentioned information then please let me know, Thank you