>I'm pretty sure this is impossible, but I'll ask just in case.
>
>Is there any way to sub-class one of VFP 7.0 Foundation Classes, but have it use myBase classes instead of _base.vcx?

No.

>Also is there any way to get the wizards to use myFoundationClasses instead of VFP's?

Not w/o diging through wizards code that comes with VFP.

<snip>

>Is there something out there that may accomplish what I'm looking for?

Yes, it's called third-party frameworks.