You can also use a method where you create a polygon web with the capitals in the center of each triangle/poly. [created by Chris Crawford]
http://www.google.com/url?sa=t&ct=res&cd=1&url=http%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DUSBbi1Dyw4sC%26pg%3DPA305%26lpg%3DPA305%26dq%3DChris%2Bcrawford%2Bpolygon%2Bmap%26source%3Dweb%26ots%3D7RdCKSBCVn%26sig%3DN2Q2rIaQWTnt0pv1xxQdLKudxtc%26hl%3Den%26sa%3DX%26oi%3Dbook_result%26resnum%3D1%26ct%3Dresult&ei=1SmvSN_QJJq4sAORutWEAQ&usg=AFQjCNEtD0FZ45xy4WGsFJlbAnnlHCrfIA&sig2=7n68fWAaQy_V226CewxPsg
http://www.google.com/url?sa=t&ct=res&cd=1&url=http%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DUSBbi1Dyw4sC%26pg%3DPA305%26lpg%3DPA305%26dq%3DChris%2Bcrawford%2Bpolygon%2Bmap%26source%3Dweb%26ots%3D7RdCKSBCVn%26sig%3DN2Q2rIaQWTnt0pv1xxQdLKudxtc%26hl%3Den%26sa%3DX%26oi%3Dbook_result%26resnum%3D1%26ct%3Dresult&ei=1SmvSN_QJJq4sAORutWEAQ&usg=AFQjCNEtD0FZ45xy4WGsFJlbAnnlHCrfIA&sig2=7n68fWAaQy_V226CewxPsg