Use Case: <number> <the name should be the goal as a short active verb phrase>
Goal in Context: <a longer statement of the goal, if needed>
Scope: <what system is being considered black-box under design>
Level: <one of: Summary, Primary task, Subfunction>
Primary Actor: <a role name for the primary actor, or description>
Priority: <how critical to your system / organization>
Frequency: <how often it is expected to happen>
Steps: <step-by-step description of interaction with user intention and system response>
BTW, http://readysetpro.com/ offers professional use case templates and white papers.