1. Add the following line to the end of your head section;
<link href="print.css" rel="stylesheet" type="text/css" media="print"/>
2. Then create a file called print.css with something like the following in it.
#topNav, #companyLogo, #subImage
Any sections id's listed will not print.
In Dreamweaver there is a print symbol on the browser navigation bar. If this is selected it will show what your page will look like when it is printed.