This site is an excellent site for grammar review, including practice exercises and quizzes.
www.studyspanish.com

A Site with Excellent practice for very beginning learners.
www.spanishprograms.com/learn.htm?Free%20Spanish%20Language%20Lessons

This site includes very basic skills, and includes areas for conversation.
www.davidreilly.com/spanish

This site contains a series of language exercises, both self-check, and instructor checked.
http://mld.ursinus.edu/~jarana/Ejercicios

This site provides verb and prepositional phrase review, in a flashcard format.
www.emporia.edu/biosci/span/flshcrd.htm

This site provides a "word of the day" mailing list, and an interactive Spanish test.
www.learn-spanich-language.com

An extensive and well organized Spanish grammar review site. Includes exercises.
www.chass.utoronto.ca/spanich_portuguese/spa220/gramatica.html

Another extensive and well organized Spanish grammar review site. Includes exercises.
www.trinity.edu/mstroud/grammar

An extensive grammar review site. Includes exercises.
www.colby.edu/~bknelson/exercises

This site contains extensive links to sites useful for Spanish Language learners.
www.lingolex.com/spanish.htm

This site contains a deeper grammar practice. In Spanish.
www.indiana.edu%7Ecall/ejercicios.html

This site is part of Florida State University's Spanish program, but has numerous practice exercises and extra help.
www.fsu.edu/~modlang/sp-cai/coursesite/ExtraPractice.htm

This site is a series of articles applying beginning Spanish knowledge. Site also includes a subjunctive grammar tutorial.
www.unc.edu/courses/span003/gram.html#spanish_3_grammar

From the University of Texas, has numerous homework exercises and answer keys.
www.sp.utexas.edu/506

An online verb conjugator. In Spanish.
http://protos.dis.ulpgc.es/morfolog/verbos.htm

A site for teaching Business Spanish - includes audio.
www.businessspanish.com

This site contains audio files for numerous common Spanish words.
http://members.aol.com/alvareze/spanish/frame.html

This site includes links to numerous language topics, including Spanish for business and Spanish for health professionals.
www.nanana.com/spanish.html

This site covers Spanish verb conjugation.
www.geocities.com/TheTropics/Island/9069/ConjugationTrainer

This site has numerous links to both exercises and resources, including a link to reading practice, Spanish jokes, and other references.
www.rae.es

These links came from "Spanish: Hits . on the Web" pgs 71-74
Part I
World Wide Web Overview by Carol Lea Clark, University of Texas, El Paso
URLs prepared by Christina Huhn, Purdue University
Thomson Learning, Custom Publishing