Getting Non HikVision camera to display on iVMS-4500

Is it possible to get a Non HikVision camera to display on iVMS-4500 viewer? just a local LAN connection needed....
I've got 5 Hikvision cameras that display fine in iVMS-4500, but would like to add one Non-HikVision camera (An older TrendNet Camera)
Does a tutorial on this exist?

Thanks Jan