Windows Vista Update

A web browser is a software application that enables a user to display and interact with text, images, and other information typically located on a web page at a website on the World Wide Web or a local area network. Text and images on a web page can contain hyperlinks to other web pages at the same or different websites.

Web browsers allow a user to quickly and easily access information provided on many web pages at many websites by traversing these links.

Web browsers available for personal computers include Microsoft Internet Explorer Mozilla Firefox Apple Safari Netscape Opera in order of descending popularity (as of August 2006).

Web browsers are the most commonly used type of HTTP user agent Although browsers are typically used to access the World Wide Web, they can also be used to access information provided by web servers in private networks or content in file systems

There are a bunch of browsers that will be available for use with windows Vista.

These are some of them..

Firefox	Internet Explorer 7	Maxthon	Opera
Avant	SlimBrowser	Netcaptor

Also, here's an article that talks about Microsoft's new IE 7 Beta and compares it with Firefox.

IE7 vs. Firefox