I may be off on this, but if I understand correctly, the RUN method is for forms, created using the new2 method...
for using an already existing form, created in the basic4ppc designer, you need to use the show method from the controlsex lib....
But then again, I may be a bit of...
NeverTheLess, do remember that Agraham states in is overview of the threading dll, that you should not use threading while interacting with screen objects like controls...