css and Netscape 4.75

we are developing a website using .asp and .css. the site looks pretty good in IE 5.5, but when we test in Netscape 4.75, anywhere the style sheets have been applied, the text looks pixelated. Also, the tables do not line up properly, but I can fix that. Does anyone know what the deal is with .css and Netscape, or is this an .asp issue.

Thanks,
Brent