>>>How can I set the property of a button from a procedure?
>>>From a menu option and in a procedure file, I want to enable
>>>a button on my form. any ideas?
>>
>>As long as you keep reference to a form, you can use this reference:
>>oApp.frm1.cmdButton.enabled=.t.
>---
>OK - we said you could createobject for a class and reference a method
>from that class, but we did not say anything about creatobject with a FORM
>and reference objects on that from? can I :
>omy_form = createobject("myform") and then
>omy_form.cmdbutton.enabled - .t. ????
>can I do this? and it this the way it is done?

Yes, you should link form object to variable or much better to app object property:
oApp.Frm1=createobject("class1")
or
DO FORM frm1 name oApp.frm1 linked