[Zope] getting a list of users from ACL_USERS

**trying again** I need to get a list of users in ACL_USERS to create a form where people can assign stuff to different users. Here's the code for the display... <SELECT NAME="AssignedTo"> <dtml-in "acl_users.getUserNames()"> <OPTION LABEL="<dtml-var sequence-item>" VALUE="<dtml-var sequence-item>"><dtml-var sequence-item></OPTION> </dtml-in> </SELECT> But when I try it using a regular (non-manager/owner) it says: Error Type: Unauthorized Error Value: You are not allowed to access getUserNames in this context When I use the site manager, it works fine... What could be wrong? What permissions need to be set so that authenticated users can use "getUserNames" in this context? Thanks, Derek Wilson