Enable a field via a combo box

[Mike]

Is there any way to allow a text box (combo box, tab
control, etc.) on a form to be enabled only if a certain
criteria is met in another field?

 

[Jason]

In the forms On Current event, something like this

If Me.ctlA = x Then
Me.ctlB.Enabled = True
Else
me.ctlB.Enabled = False
End If

Jason