Dear all,
Thanks to all the members that answered my question:
Does anybody know a free software for drawing high quality haplotype
networks?

Below I compile the main ideas:

- To use Network software (http://www.fluxus-engineering.com/sharenet.htm)
- To use TCS (http://darwin.uvigo.es)
- To use SplitsTree (http://www.splitstree.org)
- To use any graphics software such as Illustrator or Corel Draw
-  To use Network and import the wmf file to Illustrator to touch it
up/improve the colour/resolution.  Basic functions in Network are free,
though for more spiffy/efficient things you need to buy it.
- To use Export the TCS network as a postscript and improve with
Illustrator, Inkscape, CorelDraw, etc.

Dra. Romina Piccinali
Lab. de Eco-epidemiología
Facultad de Ciencias Exactas y Naturales
Universidad de Buenos Aires
Argentina

rpicci@ege.fcen.uba.ar