Inner Space build 5452 is now live, and adds native support for the Steel Series Cataclysm mouse.
To use it, close and restart Inner Space and allow it to patch to the current build. Inner Space will detect your mouse after it patches up, and will automatically support it at that point. After Inner Space is patched up, close and restart ISBoxer for it to re-read Inner Space's input device list. The extra 9 buttons will then appear in the drop-down boxes for your use in ISBoxer, as follows:
CataMouse-Left1 through CataMouse-Left3 are the extra buttons on the left side of the mouse, below Mouse4 and Mouse5. Left1 is the one closest to the palm of your hand, and Left3 is the one closest to the tip of your thumb.
CataMouse-Top1 through CataMouse-Top5 are the extra buttons on the top side of the mouse, from left to right.
CataMouse-Right1 is the extra button on the right side of the mouse.
Enjoy