I do not know how to have one form acess an object on another form.

I need to be able to acess a text box and the mscomm control from my second form, and also from a class.

ie in my class I am trying to manipulate the values of the text box in my main form.

But in neither case does it work.

Why can't I do this?
Is there a way around this?
Am I just coding it wrong?
If one of you wonderful people could show me the error of my ways, I would forever be indebted to you.