Please see: http://www.kixtart.org/board/ultimatebb.php?ubb=get_topic;f=10;t=000017#000000 in the KiXtart FAQ & HowTo forum.
If you have a single account that currently has Admin access to the workstation, you could eiterh via script or my GrpMaint.exe program add the domain users global group into the local administrators group. Run your installation and as the last part remove the domain users group so that the users no longer have admin access.
