convert township-range to lat-long or utm?

Does anyone know of a program or have source code to convert township-range
data to utm coords or lat-longs? Please email.

  If anyone has this information, I would be interested in the source code
  too.

  Linda Bragg
  USGS
  956 National Center
  Reston, VA 22092
  lbragg@ncrds.er.usgs.gov