For some odd reason, java is suddenly not enabled on my computer. I'm using IE6. I can't do any java applets or anything (and no chat rooms! grrr...). Please help! How can I get it enabled again?

first, is the Java plugin still installed on your computer, or did you accidentally delete it or anything (might sound weird, but it could happen :P)?
if not, you can re-download it from http://www.sun.com

to see if it's enabled/disabled in IE: click Tools > Internet Options... > Click the Advanced tab, scroll down, and you'll see the options for Java.