Jim,

You can use the _SCREEN.FORMS() array to look through all of the open forms on the FoxPro desktop. Use something like:

FOR i = 1 to _SCREEN.FORMCOUNT
IF _SCREEN.FORMS(i).Caption="FormTitle" OR _SCREEN.FORMS(i).Name = "FormName"
&& Whatever you want to do here
ENDIF
ENDFOR

One Caveat. Undocked toolbars show up in the FORMS() array so you may also want to check to see if the _SCREEN.FORMS(i).BaseClass = "Form"

That's all folks!