Try the major source of machine human language  translation.  Systran and SDL Technologies provide these free online language translators by special arrangement with Web-a-dex.  Use as text and web language translator or as Multilingual Dictionary.  Set to Spanish language translator but you can choose English German Portuguese French Italian Spanish Norwegian.
Affiliate Translators Used With Permission - HTML Code is copyright 2001 by Systran, SDL and Web-a-dex. ALL RIGHTS RESERVED