Where can I get maps to use as backgrounds for my netViz projects?
There are several good sources. One is at www.mapquest.com. That site has great city and country maps. Select an area, zoom as desired, then save the GIF file for import into netViz. Pick a ratio close to your page, e.g. 600 x 400 for an 8.5 x 11 inch page. Select grayscale to prevent the map from competing with the diagram objects.