For anyone getting started in datavis, the plethora of tools can be intimidating. Here are three collections I've found very useful in choosing:
http://flowingdata.com/2008/10/20/40-essential-tools-and-resources-to-visualize-data/
http://www.wikiviz.org/wiki/Tools
http://www.readwriteweb.com/archives/the_best_tools_for_visualization.php
Good luck!