Textbox contained within a frame taking focus

I have a VB form containing Textboxes both on the form and with a frame on the form.  The textboxes on the outside on the form follow the tab order set but after entering information in the last textbox outside the frame I want the next textbox within the frame to take the focus and it won't. even though I have code in the last textbox outside the frame to have the first textbox within the frame take the focus.