Do you have a hard time seeing the mouse pointer on your screen? This can be especially tough to see on higher resolution screens like the iMac 24, 30 inch Cinema display or even a 17 inch MacBook Pro.
Here is how to change it:
1. Open System Preferences.
2. Choose 'Universal Access'.
3. Click on 'Mouse'.
4. Slide the cursor to the right to make it larger, slide to the left to make it smaller.