Thanks, but I should have been more specific. Here's a better example:
MKL(255) would equal Chr(0) Chr(0) Chr(0) & Chr(255).
CVL(Chr(0) & Chr(0) & Chr(0) & Chr(255) would equal 255.

I hope you can see what I'm trying to do here. The problem is, these function must accept extremely large values, up to FF FF FF FF. (ÿÿÿÿ).