This behavior may be changed in future versions of Mathematica, but now you can use the CounterAssignments option for Cell to reset for a specific cell, and then it refers to that cell and subsequent cells in the notebook.
Use the optional inspector or directly edit the Cell expression (Cell> Show Expression in the menu) and add a parameter, for example:
CounterAssignments -> {{"ItemNumbered", 1234}}
Please note that the counter will increase if it is displayed in the same cell, so if you want to start numbering at 1, start your counter at 0.
Hope this helps!
Michael pilat
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