>Is that really so? I feel sure that it is possible to control the order and progression from control to control with the [enter] key until the "I'm all done" condition is encountered, without enforced reliance on the [tab] key. Please expand...

Go to msdn.microsoft.com/library

Expand "Books" on the left-hand side. You'll find one called "The Windows User Experience". These are the Windows guidelines. You'll find the information buried in there someplace.