I have a style I want to try out on my SX900. How can I load this.
Some of the other answers have assumed you are talking about a style from an expansion pack. Is that the case, or is it an actual style file that have on your computer?
If you already have the file, then all you need to do is copy the file onto a USB, and stick the USB into your keyboard. Then when you go to select a style, select USB as the source, and the file should appear on the screen to select it just like any other preset style.
If you want, you can copy the style file from the USB into the USER memory area so that it is always available even when the USB is not connected.