aznange1boi,
If you are running IE or Netscape try this first -
Go to Control Panel, select Java, select the browser tab. uncheck Netscape and IE, reboot & try.
If you still get an error go to add/remove, uninstall Java, then go here -
http://java.sun.com/j2se/1.4.2/download.html
Download and re install Java.
Good Luck,
Norm