Yeah, I’d suggest checking it out again.
Firefox (the current browser part of Mozilla) is available for Linux, Windows, & Mac’s. (And pretty much the same version for each.)
The latest version (Firefox 2.0) is much better at rendering web pages. Partly because it’s gotten better, and partly because webpage designers have gotten much smarter about avoiding code that only works in IE. I seldom find pages like that any more. When I do, I generally go elsewhere to some page that has better quality web designers. I only have one site that I have to use, that only works with IE.