I have converted to using Firefox from work instead of Internet Explorer. In the past, I would use Netscape for all financial transactions, because of the pervasive nature of spyware which attaches itself to Internet Explorer.
Now, the open-source Firefox browser is finally to a point where, functionally, it feels every bit as good as Internet Explorer.
http://www.mozilla.org/products/firefox/
OK, there are still some things I have to get used to -- I'm not quite sure how to order my bookmarks in a non-alphabetical way. The drop-downs are a bit more sensitive to cursor position than I am used to.
But all-in-all -- this is a good browser.