Hide Web Page Header and Footer

I am working on a web application that prints info to a web page that is to printed on a bar code printer. The only info on the page is a tracking number and then the bar code directly under the tracking number.

My trouble is that the page displays the page title and page number in the header of the page, and also displays the site address and current date in the footer of the page.

I am using ASP.NET 2.0 and VB.NET.
My question is this:
How do I stop the header and the footer of the page from displaying in print preview, and stop the header and footer of the page from trying to print on the bar code label ?

Any help or advice will be greatly appreciated...

Thanks,
Darrell