Community Tip - Did you get called away in the middle of writing a post? Don't worry you can find your unfinished post later in the Drafts section of your profile page. X
Have you verified that WF3 is compatible with your Windchill server release? Page 5 of this document.
BTW, basic browser versus java has nothing to do with WF/Creo interaction. I recommend also looking at the WC Business Admin and End User guides. In future postings, please include Windchill release and potentially WF/Creo client type.