I just got a new video camera system. The cameras attach to a switcher using 6-pin Mini-Din cables (same as PS/2). The cables they have supplied me are too short (60ft.)

I'd like to splice the given wires and insert CAT-5e cables in between to extend the wires to 100ft.

Is this doable? What wiring configuration should I use? I know I should use specific wires for the audio and also specific wires for the ground and video as the CAT-5e wires are twisted.

Any tips? Thanks! Any help appreciated... =)