In the Panasonic ZS camera reviews here, it says viewing and editing AVCHD videos is difficult, as is finding them on the sd card. However, I disagree with parts of that. To find the videos on the SD card you have to go 4 sub directories deep. That is a nuisance but not a huge problem.

Likewise, playing AVCHD videos isn't that hard. They play just fine with Windows media player v12 on my Win 7 PC. They won't play with Windows media player v9 on my Win XP PC, but they will play with VLC player which is a free download.: http://www.videolan.org/vlc/

As for editing AVCHD videos, I don't know about that because I don't edit my videos. But I think the reviews here should explain that playing AVCHD videos isn't bad at all with VLC or Windows media player v12.