You know, I bet I do.
In fact, I know I do. Plus a trial version that has the benefit that it includes the SDKs (help files and such).
I'll put it up later.
For learning C I'd recommend the C for Dummies books. I used them before I even took algebra in middle school, and I got through them. They're intertaining, although if you know how to program already, it might be slow for your tastes.
Another advantage: moving to C++ the program becomes platform independant (or just about so). You'd have to rewrite whatever part of the GUI is left behind in VB for the new platform, but otherwise...