If you want a digital camera with AVCHD-Lite recording capability, these are the most likely applications for editing:
Sony Vegas (Movie Studio Platinum, Movie Studio Platinum Pro, Vegas Pro)
Pinnacle Studio (Plus or Ultimate Editions)
Roxio Creator (2009 or newer)
Cyberlink Power Director (Ultra)
Nero (8 or newer)
Of the options I list above, Sony Vegas and Pinnacle Studio are the two I use regularly. I have tested the others and know they work with AVCHD files, but I prefer Sony Vegas and Pinnacle Studio over other choices.