can i produce a text file that has the infomation for the tag <allow>

so a user can edit the text file and the web.config reads that file to get the data??

line in the web.config file:

Code:
<authorization> 
  <allow roles="Server001\AdminGroup, Server001\ViewerGroup, Server001\ModGroup" /> 
  <deny users="*" /> 
</authorization>
please help if you have any ideas, or work arounds?
thanks,
tom