I've previously recommended downloading Firefox 3 which is in a beta stage and is not widely distributed. The beta 2 I recommended was superseded by beta 3 and very recently by beta 4. Beta 3 was unstable on the main computer I use, but not so much on another work one, both running Windows XP.
Sadly I'm still purely a Windows user but I'm planning my escape to Macintosh Leopard (Mac OS 10.5) on a current model MacBook (AppleMac laptop/notebook) in the next few months. I will be free. Check out this very independent, objective and detailed comparison of Linux, Mac Leopard, Windows XP, and Windows Vista in PC World to see why I want to make the shift. In fact just do a search for wesbites which discuss Macintosh and see a great many reasons from many sources, and talk to anyone who made the switch.
Back to Firefox. Beta 3 kept freezing and crashing on my computer at home, Beta 4 is great. As it's beta there's a limited choice of themes and extensions but the MicroFox theme is available which is a beautiful one, and the most important application for me, the nitro pdf download, is working. British English dictionary, ScribeFire and FireFlag are working. Beta 4 is very stable and very quick. Downloads are much faster than before. Beautifully minimised graphics create very spacious and ergonomic feel. Bookmarking is very rapid, straight from browser bar, and it's very very easy now to get to previously visited website by entering word from site title in window. The best aesthetics aspects of Safari (Apple) browser are now marched through a very integrated feel unfiying elements and a sense of curvature in three dimensions. Internet Explorer does not begin to compare.
Come on people, Internet Explorer is not a good browser, try Firefox and you'll know what I mean. Go on try it. If you want to play very safe, download Firefox 2 from the button on my side bar. If you're feeling just a little adventerous download 3 beta 4. Whichever you download, you won't disable Explorer. You can download easily and quickly, You don't even have to restart the computer to get it working after download. No risk, no trouble. Go on, do it.