Yes very easy. I just coded up a Q&D test run. Works fine. The real difficulty would be putting it into a COM Add-in. Haven't tried it yet in .Net. I have the tools though.
Getting it put in MZ-Tools would be fantastic. I love MZ-Tools. But I didn't think he was furthering the 3.0 version? (And as far as I know 6.0 won't work w/VBA.)