Disable Query Builder Tool access to end users

Hi,

Did any of you block the Query Builder Tool access to your end users?

In our Netweaver 2004s BI implementation, we have a special need to restric the access to Query Builder Tool. Mostly our users are using BEx Analyzer tool (Front end service pack- SP12). Any ideas in this regards would be highly appreciated? Of course I can restrict access on the back end that our end user is only able to read the Query. What I am looking what is, how to stop the user even from launching Query Builder tool?

Thanks

Jay Lakshmanan