I needed to have custom hardware cursos in my PC/MAC game, due to low FPS on slow machines. I found no solution, so I've written this very simple plugin. It enables custom hardware cursor support in Unity standalone applications for PC/MAC.
All you have to do is download the package, and follow the tutorial provided in PDF.
The plugin requires Unity Pro. Minimum Unity version is 3.0.
Drop me a line if you find it useful, or in case you had problems or questions.