You can enable the mouse pointer by putting it on one of the lower three programmable keys, from Apps pick Formuler remote, pick the right remote and then progam one of the hotkeys with "mouse" then you can use that key to toggle the pointer on and off.
Z8 Pro comes with a new Formuler IR1 remote. You need to install Formuler remote app from the Market app. Then, you can program hotkeys.
Here are YouTube videos that I found as general instruction of how to.
<how to program hotkeys on Formuler GTV-BT1/IR1 remote>