Troubleshooting - cannot install Moss.

a>. First check if the asp.net 2.0 is registered to IIS properly. If not, follow the steps below to register.
1. Open the cmd winow. Open the following directory:
%drive%\Windows\Microsoft.NET\Framework\v2.0.50727.

  where %drive% is the drive letter on which you installed Windows Server 2003.

2\. Run the following command:

  aspnet_regiis -iru -enable

b>. Then check if the aspnet is allowed in the Web Service Extension in the IIS(Internet Information Services Manager). Follow the instructions below to check this setting:

1\. Click start, point to Administrative Tools, and then click IIS.

2.  In the left pane, click the plus sign(+) to expand the nodes. Find and select the Web Service Extension node.

3.  Now the ASP.NET v2.0.50727 should be listed. Check if the status is Allowed. If not, click the Allow button to set the status.

c> Run the MOSS installation again.

Till now, hope this post has helped people who has the installation problem. :-)