If you haven't already done so, take a look at Craig Berntson's article on integrating CR with VFP. Might save a lot of headaches. I switched over to CR for my current project specifically because of the subreports feature. The main documetn produced by my app has no less than 6 subreports and I can see no way in which this might be accomplished in the native report writer (not and keep the order of data presentation the same - which I am not at liberty to alter).
Good luck, and any questions, just ask here, there are plenty of people here with CR experience.

Randy