Ok heres the deal

I am trying to create a form in outlook, now that in its self is not to hard
but i am not a programmer and i wanted to get a bit flash, here is what i
want to do

i have four tabs in my form named (for the sake of this post):
Main - 1 - 2 - 3

Now i want a combo box on the "main" tab with 1,2 and 3 as options

Ok thats not a problem. Now here is what i want.
If the combo box is set to 1 for example i want "2" and "3" to either be
invisible or be disabled. so if the person then changed the combo box to "3"
then 1 and 2 would be invissable or disabled.

Im sure it can be done with some sort of code to check what value is in
combo box and if it matches certain criteria to either change the enabled
states of the other pages or to change that value HideSomethingSomething in
vb.

i know there is someone who can help me but please try to keep it simple as
i really dont have a clue about VB (ok i can sort of get the idea but dont
have a clue about terminology)

Any help would be great and make me look so clever at work