How to find a failing DLL?

[Kurt Gibson <kgibson@xxxxxxxxxxxxxxxxx>]

Still trying to figure out how to make BestCase work on wine.  It sort 
of runs, but several fields and radio buttons cannot be selected with 
the mouse.  Others have suggested that the problem is likely a DLL.

Is there a system that is better than random checking to determine which 
DLL(s) might be the problem?

Thank

Kurt