Thank you for the quick reply!
My apologies for this being overly simplistic, but I am not sure that I get the link between tabs and fields? I have done as is said in the links you provided and created a tab, but am not sure how that is supposed to help me hide a field.
Sorry for the trouble, but thank you again!
And just to add...the links you provided mention being able to go to a specific tab via a script. How is that done?!
As it stated, if you have FM10, you can use a script trigger to go to a certain tab on page load etc. Therefore, the script can check if that field is not empty, if can go to a tab that has that field on it using Go to Object. Otherwise, the default tabs would display which has no field on it. IOW, 2 tab panels in your tab control. First one is blank, and the second has your field on it.