dodsdad 0 Newbie Poster

can someone help and explain why when i run the pc in DMZ Mode i disapeer off the LAN
We have a camera system at work to monitor the yard which is accesable from any internet connected pc but to allow this it runs through my pc in dmz mode. when in this mode the other LAN users can no longer access the shared printers and my pc is nolonger shown in our work group:!: