That's rough! Are you logged in as admin? Do a safe start & repair permissions:
SAFE START & Permissions (click me) By the way, it's a good idea to repair permissions both before & after you install softw. It's a good idea to keep your Java up to date for LW!!
If you have a G3, is it dual OS startup? You could bootup in OS9 & delete it. OR/& startup with a startup disk (OS9/X) & delete it then.