SelfHTML (de) states, that Netscape 6.0 would have problems interpreting media="print". Maybe you could try something like this, but I'm not sure if that would work on all browsers:
Code:
@media print {
/* all font colors set to black */
body, body * { color:#000000; }
/* hiding all images */
img { visibility:hidden; }
}
These style settings could be defined in your css file. In the above example the images are hidden (img visibility:hidden;) and the body tag and all its child elements are set to black font color.
Georg