Some interesting links regarding older and latest Visio productsa and the hard task of conversion or melding efforts. Hope you get to the exact instance you are trying to find.
Good Luck, as I often have a hard time with Viso -> Autocad more than the reverse.
Visio Technical - Working with...
How to Replace Lost, Broken, or Missing Microsoft Software or Hardware
Go here.
http://support.microsoft.com/default.aspx?scid=kb;[ln];326246
I have always gotten replacements by calling them regardless of what or how old.
If you give them the required information they will usually mail you...
