>>It should work 100%.
>>
>>DO FORM yourformname NOSHOW
>>
>>Anyway, what's the error message??
>
>The message is "Command contains unrecognized phrase/keyword". I am using VFP 3.0, but I cannot find NOSHOW command in the help file of either VFP3 or VFP5. What am I missing ??
Klas,
Save your form as a class w/o playing with visible property (default .t.). Then call like this :

cMyFormClassLib = "myTestLib" && Your actual classlib name here 
cMyFormClass = "myTestForm"   && Your actual class name here 
set classlib to (cMyFormClassLib) additive
oMytest = createobject(cMyFormClass)
release classlib (cMyFormClassLib)
wait window "Activate form ?" to lActivate
if lActivate $ "Yy"
   oMytest.show
endif	
read events

Cetin