You are also running a very very ancient version of Firefox that has many known security holes. I would upgrade to Firefox 12 ASAP to keep your computer more secure (Windows 2000 is an insecure OS anyway, but any bit helps)
This is a very old machine so if something bad happens to it-no great loss. Various software components nag me to upgrade them, but invariably they fail because they won't run in a W2K environment. It would seem reasonable to check first and nag second. All this is by way of saying the current release of Java won't install on this device.