Head to San Fierro. Here You need to find a small town called Financial.Its located at the North-East corner of the San Fierro map(if you have a hard time finding it, there is a Well Stacked Pizza Co. and a clothes storeright next to eachother on the map). Ok you will need the BMX Massive Jump cheat for this. Jump on top of the Victim Clothes shop with the bike and ride around but keep camera on top of you so you can see your self from above. When you do this You will become "The Amazing Invisi-Carl" as i like to call it. Your shadow will be there , but you will be invisible. NOTE:I only found it to work with a bicycle and only on the Victim clothes shop that I stated.Also the camera views can all be used except for the 1st person camera