Hi, I tried searching this but only found old posts which outdated plugins. Im looking for something that will connect child spheres together similar to the zsphere widget only for ZB3. Can someone link me please?
thanks 
There aren’t any plugins that do that at the moment. ZScripting for ZSpheres for ZBrush 3.1 PC has severe limitations and no-one has produced anything of the sort for Mac.
all i really need to do is connect child spheres to make continuous loops etc. Is this not possible?
It has never been possible to do what you’re wanting to do. Perhaps in a future version. For now, one option is to create the loop and make an adaptive skin. Then use retopology to rebuild the mesh so that you don’t have intersecting polys.
An alternative, if the topology is not important, is to use a Unified Skin. You can see the difference here: http://www.pixologic.com/docs/index.php/ZSpheres:_Adaptive_Skin
The future is bright, I hope. 