Alex's suggestion will work, but the underlying problem is that your Tabbed Control on the Subform (if I've read your post right) is too long to be displayed, all at once, on the screen. The definitive answer is to re-size it so that this doesn't occur.
IMHO, any Form or Form object that requires that the user scroll, in order to view everything, is very user-unfriendly.
Linq ;0)>
The problem with making anything foolproof...is that fools are so darn ingenious!
All posts/responses based on Access 2003/2007