2 hints to get more responds:
* Spellcheck your questionaire, when almost every line contains a spelling error, it hardly looks professional.
* Use an online survey tool. I used Surveymonkey in the past for simple things, the free version is limited, but you should get around that if you are creataive. Here is a good list:
http://zaidlearn.blogspot.com/2008/0...tools-1st.html
Otherwise at least in my city universities offer very good online surveytools for free for their students. Maybe you school does also?