We are investigating using an on-line survey form (http://surveymonkey.com/Home.asp). It is free to use as long as you have only 10 questions and less than 100 responders. Otherwise it is $20 per month. It looks really easy to set up. We are in the design stage on this one.
Be sure to use the FIND option and type in "Evaluations" -- you'll be directed to useful info.