Screen Resolution in a FrontPage Web

I am running Windows 2000 with FrontPage 2002. I have a screen resolution on my computer of 1024×768. I have built a website but when I look at it on a computer with a resolution of 800×600 the page looks to big and you have to scroll at the bottom.I have not published this website to the web yet. Is there any way to change this web to 800×600 so it looks correct on the Internet?