More IE Woes

Got a client with XP Pro SP1 using IE. She was trying to do some online banking and she couldn’t login. The bank had her do some update on IE and now not only does the online banking login not work (fill in login and password click LOGIN and nothing happens) but can’t get to Windows Update site either. Downloaded and installed Java plugin and tried to reinstall IE but all it will do is tel me there;s a newer version installed. Tried uninstalling IE and reinstalling, same thing. Any ideas folks?