Importing .mts AVCHD files into Premiere Pro CS5.5: can it be done?

Is it possible to import .mts files from a memory card into Premiere Pro? Whenever I try to, I get a message that reads “Codec not supported“.
My camera is a Sony Alpha A55, and this worked perfectly well in Final Cut Pro X.

via Adobe Community : Popular Discussions – Adobe Premiere Forums http://forums.adobe.com/thread/943170