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Script Name: Spider_Create   
#Script Label: Create Spider Diagrams   
#   
#Description:  Custom python script developed to create spider diagrams from points contained   
#in one or two feature classes.  If using two feature classes, one feature class must contain   
#the origins and the other must contain the destinations.   
#   
#Source Script File: Spider_Create.py   
#Programming Language: Python 2.4   
#ArcGIS Version: ArcGIS 9.2   
#Author: Anthony Palmer, U.S. Army Corps of Engineers, Tennessee-Tombigbee Waterway   
#Email: anthony.g.palmer@sam.usace.army.mil   
#Date: 04/04/2007   
#   
#Parameters:   
#   
#           Display Name                         Data Type        Type      Direction  MultiValue  Dependency   
#  argv[1]  Origin Point Feature Class           Feature Class    Required  Input      No   
#  argv[2]  Select Subset of Origins             SQL Expression   Optional  Input      No          Origin Point Feature Class   
#  argv[3]  Select Origin Key Field              Field            Required&n