We support the following browsers for both Mac and Windows: Internet Explorer 6.0 and above, Firefox 1.X and above, and Safari 2. We recommend that all users upgrade their browsers when possible.
To download the latest version of Internet Explorer:
http://www.microsoft.com/windows/ie/downloads/default.mspx
To download the latest version of Firefox:
http://www.mozilla.org/products/firefox/
To download the latest version of Safari:
http://www.apple.com/safari/