Configuration on iis6.0 for .net4.0 applicaiton

Hi,

        I created one web application in vb 2010. Now i want to deploy on the windows server 2003, this server has IIS6.0.I installed .net4.0 on that system.while i run the application , getting some error as

Parser Error Message: Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive.

Source Error:

Line 130:          debugging ASP.NET files.
Line 131:    -->
Line 132:       

I want to cofiguration steps for .net4.0 application in iis6.0

If anybody knows about this, help me immediately..............

Advance Thanks