If you're interested in integrating Perl and .NET, you might want to check out the PerlNET tool in the ActiveState PDK. I used it last year to take a Perl class we had and wrap it so that a C# program could instantiate it and call its methods just like any other .NET class.

Getting the build process set up right required a little finagling (and the documentation, at least at the time, was not entirely clear), but once we figured it out it worked just great.