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Thanks for pointing me to LINQ. I didn't have much more than a brief look on it yet, but it looks really promising in some aspects.

Incidentally, Arjay posted an awesome piece of code over there...

This is a spin-off of http://www.codeguru.com/forum/showthread.php?t=504635, in particular posts #10 and #12. Those who might be interested in the history of why I posted this might have a look over...