I've got MSVC++ 6 here and I tried what you did with a quick sample and got the same linker error. I removed the const declaration from the file where it was declared and also from the header where it was defined and it then compiled/linked successfully however. Hmmm...
"Owners of dogs will have noticed that, if you provide them with food and water and shelter and affection, they will think you are god. Whereas owners of cats are compelled to realize that, if you provide them with food and water and shelter and affection, they draw the conclusion that they are gods."
-Christopher Hitchens
