Dear Vicky,
Your best bet would be to use a custom item. This would require you to do some html programming. I don't know how proficient you are in it, but there is a forum thread that has a couple of examples of multiple response items done as custom items. Check it out and let me know if this might be in the ballpark of what you want:
http://support.empirisoft.com/showth...ighlight=scale
Please don't hesitate to ask any other questions that you might have.
Jason
Jason Reed
Empirisoft Software Support Specialist