I've not come accross this issue yet it looks like you've already recieved an answer re print driver updating which may or may not have worked.
Just in case it didnt, had a quick look on MS website - cut and pasted from
http://office.microsoft.com/en-us/wo...005188741.aspx
If you inadvertently format a manual page break (page break: The point at which one page ends and another begins. Microsoft Word inserts an "automatic" (or soft) page break for you, or you can force a page break at a specific location by inserting a "manual" (or hard) page break.) as hidden text and then specify that hidden text is not printed, Microsoft Word ignores the manual page break. The new page won't appear when viewed in print preview (print preview: A view of a document as it will appear when you print it.) (File menu), and the new page won't print.
To remove the hidden text format, first make sure you can see the manual page break: Switch to normal view (normal view: A view that shows text formatting and a simplified page layout. Normal view is convenient for most editing and formatting tasks.), and, if necessary, turn on hidden text by clicking Show/Hide (the black paragraph marker) on the Standard toolbar. Then, select the page break, click Font on the Format menu, and clear the Hidden check box.