Visual studio 2005 not upgraded to .Net 3.5 after installing .Net 3.5 Runtime

I am using VS2005 and .Net2.0.I upgraded it to .Net 3.5 by using this link .After installing successfully when i checked vs2005 version(by going to menu Help/About Visual Studio)it is still showing Microsoft.Net.Framework Version 2.0.50727 service pack 2.

How can i solve this issue ?