Use DLL from Framework 3.5 in Framework 1.1

I have programmed a DDL in Visual Studio 2008 express (framework 3.5) and want to make reference to it from Visual Studio 2003 (framework 1.1) is that possible and how do I do it.

Then I try to make the reference I get an error: This is not a valid assembly og COM component

DanskSkoleFotoAsked:
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tetorvikConnect With a Mentor Commented:
Unfortunately it's not possible. Your application runs in a single process and it cannot load multiple versions of CLR.
For more info:
http://blogs.msdn.com/seshadripv/archive/2006/02/24/538610.aspx
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