Loading presets into a hosted plugin

Currently working on a plugin that hosts another 3rd party plugin, everything works, it opens the plugin GUI into a separate window and works fine, but now want to add in the ability to load the presets for the 3rd party plugin, similar to the way BlueCat Patchwork menu works.

Can anyone point us in the right direction to get started? 

Have you looked at get/setStateInformation()? The audio plugin host demo saves plugin information when it saves a graph. Take a look there, you will probably be doing something similar.