FMSInc offers a program for sale that will allow tabs anywhere. I purchased it bout wasn't to impressed with the documentation and service was pretty poor until I inquired with them about some db work I had I was looking to farm out.
Maybe try registering the Active X control. Not to sure of its operation. Hope it helps. Think you may use a select case to set the focus around your forms (Tabbed form with the tabs propery set to none)
Dave