I was checking out the KB and found an intesting (IMO), related article. Here's a brief:

PRB: Report Preview in Top-Level Form Disables VFP Menu
Last reviewed: January 2, 1998
Article ID: Q178384
The information in this article applies to:
Microsoft Visual FoxPro for Windows, versions 5.0, 5.0a


SYMPTOMS
A Top-Level form containing a report preview disables the Visual FoxPro system menu and the Command window.



CAUSE
Even though a Top-Level form should be independent of the desktop, the report preview is in its own loop and prevents other windows from functioning.



STATUS
This behavior is by design.


>It's a known bug in the MS KB Q164868
...snip