Clean install of IIs??!!!

[J-T]

I installed ASP.NET version 2.0 and then unistall it and now my IIS is
messed up and my 1.1 ASP.NET application dosen't work.

Everything messed up.Now I install the IIS and Framework 1.1 ,then I
installled IIS 1.1 ,but it still has that ASP.NET tab.I did the set up from
the scratch why it is there? when I install Framewrk 1.1 ,it is not listed
in the dropdown in that tab??

How should I force IIS to be installed cleanly.

Thanks