I am trying to install VS ext for .net framework 3.0 in windows xp sp 2. It says .net 3.0 runtime components need to be installed before that. But I have already installed .net framework 3.0 and sdk(both final release). But still I am getting the same message. I coud do this in Windows 2003 with out any problem. VS ext version that I am trying to install is november CTP (this is the final release as extension to VS according to MS).