Beach Dog,
I think you should try uninstalling and reinstalling Java. If you have a registry cleaner it would be a good idea to run it after you uninstall.
You can download Jave here -
http://java.sun.com/j2se/1.4/index.jsp
The 1.5 Beta is also available there. I haven't tried 1.5 yet. I run 1.4.1_04.
Good Luck,
Norm