I have to say this is something you cannot accuse the much (and justly!) maligned COBOL for.
COBOL is continuously supported with frequent new releases from IBM, UNISYS, MicroFocus on several platforms which support things like the latest hardware, 64bit addressing, built in support for XML etc.. There is even a Linux version (OpenCobol) which is progressing nicely.
Furthermore the language itself is continuously developing (if you can call making the same old mistakes with new reserved words developing :-} ) and the latest langauge specification is fully OO look here if you don't believe me!
So COBOL is not yet dead merely archaic. Whereas I think VB 6.0 really is dead and just bit late for its own funeral.