How can you change the mouse cursor in OS X? I can't find many solutions for changing the mouse cursor on OS X 10.6

I've seen http://unsanity.com/haxies/mightymouse but it does not support 10.6 at the moment.

Any hints or tricks to change the cursor? Specifically, I need to modify the text selection cursor as it is almost invisible when using a grey background in my IDE.

Thanks!
Sorry, Apple doesn't allow people to change the mouse cursor anymore.