HDMI is digital. I'm pretty sure you'll need a digital to analogue converter.
I've seen HDMI to VGA leads, but at least for my projector, the VGA has to be analogue. (I was going to get an Apple TV)
Bulb life is interesting. I got my projector a few years ago, and I'm about halfway through the bulb life. By the time the bulb expires, my projector will be pretty obsolete.
I only use the projector for watching films and box sets, so it's not on the whole time like a TV would be. The bulb is expensive, so when this goes, it'll be better to just get another projector.