As someone who is heavily involved in the Microsoft world -- does anyone care? Seriously, I did some great work with VB6 back in the day, but it was already struggling for any vague relevance by 2003. What possible appeal does the source code hold, apart from historical curiosity and amusement at what is probably a hilarious codebase? This doesn't help any Microsoft-houses, who have long since been forced to bail on VB6 -- and the stragglers are technical incompetents who can't get anything out of this.
In 2003, I could see how this would've been supremely useful (if arguably dangerous in any number of ways). Now, it just doesn't make any sense at all.