First, you are not using the correct syntax to disable your options. A google search on "html input disable" will lead you to the correct syntax.
Next, you say that you do not want to disable the select, but you are attempting to disable all the options. That seems very odd.
As Dan says, be aware that the loop implies each option element will have a disabled attribute. Since you have to output, use the cfoutput loop (update: unless, of course, the code you've shown is already within the cfoutput tag):
<option value="#qry.re_id#" disabled >#qry.re_name#