I didn't realize fully what you were asking.
I cannot vouch for how well this might work, but I found a VB6 decompiler that many rate pretty highly:
http://www.topshareware.com/PE-Tools-download-6191.htm
It's called PE Tools. I can't try it now 'cuz VB is on my home comp and I'm at my sponsor company, Magna Donnelly right now, but you try it out, see if it works, and get back to me if it fullfills your requirements.
Good luck.