how do you plug intel visual fortran into visual studio .net in order
to compile visual fortran 8.1 programs in .net (specific details please)

This is just a comment I am not a researcher, but I am a user of Intel
Visual Fortran and .NET.

Its really easy.  Just install Microsoft Visual Studio .Net as usual. 
You can install whatever part of it you want, eg the c++, c#, Basic,
etc.  It doesn't really matter.

Next install the Intel Visual Fortran software and it will
automatically hook in with the .NET software.  After you have
installed it start up .NET and start a new project, along with C#,
C++, Basic, etc you will now see Intel visual fortran as an option. 
Select it and your on your way. :)