Marty,
>From my Visio (5.0a) help file:
There is a 5.0c upgrade available from the Visio website, a 21 meg download (took me about 2.5 hours the other night) or you can order a CD. THanks for the rest of the info too.
If the out-of-datedness of this is simply because of a .VST file, there is a pretty easy solution to that.