>I have a Yes/No checkbox whos value is FALSE (unchecked).
>
>In the click event of another object I change it's value to TRUE (checked), yet it still appears unchecked. How do I refresh this object on the screen? Do I have to refresh the entire form or can I refresh the only the checkbox?

Normally, there is nothing special to do. You can refresh the checkbox but you don't need to refresh the entire form.

Private Sub Command1_Click()
    Check1.Value = vbChecked
    Check1.Refresh
End Sub

I don't understand why the checkbox doesn't show the correct state. Can you paste some code?