I have run across a few websites (one's my bank) that ONLY work under Internet Explorer. I know of a workaround for Intel Apple machines, but I have a G4 PPC iBook. None of the Mac browsers I know of will work (Safari, Firefox, Opera, or Camino) for these websites. Any suggestions will be most welcome. Thanks.
You have a few options. Get a user agent switcher for Firefox and try that.
https://addons.mozilla.org/en-US/firefox/addon/59
If that doesn't work you could try Opera
http://www.opera.com/
It sometimes works on IE only sites. If you had an Intel based mac there would be a few more options.