As a location photographer in UK (and a recent convert to digital), I'm loading up my MacBook Pro with photos while I'll travelling about. My problem is basically keeping the laptop charged up, so I can do a bit of pic editing while I'm on the move. It would be so handy to charge the MBP through the cigarette lighter, but I don't want to do anything to harm the machine (power surges, etc). Thoughts anyone? Maybe a recommendation for some cabling/gadget that I could buy in UK?? Thanks...