I'll be doing my first powerpoint presentation next week, I'm taking my own macbook with me and I've got a great little app on my iphone to use as a clicker, my question is about the cable required to fit in the projector, I dont have my own. Is it a standard cable that both macs and pc's can use? My employer has a cable but im just checking it will be compatible with my mac as I wont see it till the day of the presentation, any info appreciated