i am trying to import avchd video but can't do it please help

This forum is for questions about Apple Remote Desktop, Apple's software for managing networked Mac systems, and hence not the best place for your question. Since, however, you don't post anywhere near enough information for me to understand what you're trying to accomplish, I can't suggest the most appropriate forum. There are forums for iMovie, Final Cut Pro, iTunes and for all Apple's hardware, so choose whichever one applies to your issue.

Regards.