Not sure if this would come under wildcards, but a *Run AppleScript* action can be used to swap parts of text around. Are there multiple divider characters, or are you just looking for the first one?
You should post your specific questions to a new topic so that it doesn't get lost in an existing one - I almost missed your question here since this topic is answered.
Tiger's Automator is also a bit different than the Leopard ones, if your profile is correct.