Most electronics shops in the US will flog you a 240-to-110V converter for about 10 bucks which will power the sub-1Amp charger, or you can buy a multi-output charger on the internet pretty cheap if you are prepared to make sure the polarity and connectors are right.
Every camera I have seen will do PAL and NTSC in the settings
Watch out for warranty - some only have 30 or 90 day international warranty, it's a pain getting it fixed if you are abroad back in the UK.
Sony/Olympus/Canon/Fuji. We have the Sony Cybershot DSC150, now the DSC200 something, brilliant piece of kit.
BW