Well, chances are the power supply for it is a universal 100-240V unit - so you just need the appropriate power cable. Lots of stuff is universal voltage, especially lower powered units like small LCD TVs.
The problem is if it's a PAL unit, it will likely handle the 50Hz resolutions - 576i (instead of 480i), 720p50, 1080p50 etc. it may or may not handle the 60Hz resolutions. It's a tricky situation since DVD/Blu-Ray players have the same issues.
Last time I had an AppleTV, it supported both 50 and 60 Hz resolutions, so it should work.
Even NTSC is no guarantee - North America uses 3.58Mhz for the color burst, while in Asia, they often use 4.43Mhz (Japan, I believe).
Is there a reason to import a tv? At 32 inches, the shipping would make even best buy a good deal... Nevermind if you have a problem and need to ship it all the way back...