How should the Project Velocity metric be calculated for the first iteration?

Related Wiki Pages:
	* ExtremePlanning

Yahoo Egroups:
	* http://groups.yahoo.com/group/extremeprogramming/message/16617
	* http://groups.yahoo.com/group/extremeprogramming/message/16890
	* http://groups.yahoo.com/group/extremeprogramming/message/25509
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For more XP Implementation Issues, see ExtremeProgrammingImplementationIssues