Roland_Bonta,
Well, what is your idea of a "graphic" for the structure?
As far as dividing a project into phases I suggest you define the phases (summary lines) at outline level 1 and then create the work packages (performance tasks) at outline level 2 under each summary. You many want to further indent sub-sections under each summary if that facilitates a better "graphic".
Keep in mind that summary lines are NOT tasks, they are simply a summary of the subtasks (performance tasks) under them. Summary lines should have no links (predecessors/successors) and no resources assigned.
As far as the work breakdown structure, Project automatically creates a WBS field based on the indenture but that field is also user definable.
There is a whole lot more to learn about Project but based on your limited question, hopefully the above gives you a starting point.
John
