You can not actually select a certain page on a tab control using a
shortcut. In LabVIEW 7.1, you CAN set up Key Navigation. Right click on
the control (the tabs for a Tab control) and select Advanced -> Key
Navigation... On the left you can select what key you want to activate
this control. The key choices are fairly limited, though. If you select
a Tab control in this way, you can then use the right and left arrow
keys to select different tabs.
You can set up Key Navigation to go to a specific control on a tab page
and the key will take you straight to that tab page. Warning that you
will activate that control when you do this. You can set up a hidden
button that does nothing on a tab page and use Key Navigation to get to
that page.
I figure that this is not exactly what you were looking for, but it's
what LabVIEW 7.1 has. Your other choice is to set up a run time menu
(as has already been suggested).
Rob