The filter name that you must enter in this task is amiis6auth. Be careful to enter the name exactly. If you enter the name incorrectly, any future attempt to use the IIS6AuthAdmin -unconfig command during installation will fail.
Log in to the Microsoft Office SharePoint Server as an administrator.
In the Microsoft Windows Start menu, choose run.
Type the following: inetmgr.
Click OK.
Expand the local computer.
Expand the Web Sites folder.
Right click Default Web Site.
Click Properties.
Click the ISAPI Filters tab.
Click Add.
In the Filter Name field, enter the following: amiis6auth
In the Executable field, enter PolicyAgent-base\iis6\bin\amiis6auth.dll.
Click OK.