Applescript and iTunes

Does anyone have a quick example script that can show me how to copy mp3 files from a folder on my hard drive to an iTunes playlist? I've found plenty of documentation regarding the iTunes dictionary. However, all of the scripting examples that I'm finding deal with working within iTunes assuming that all of your required files are already in the library and/or associated with a playlist. I want to be able to copy the files from my Hard Drive to the iTunes Library and/or a playlist.

Thanks...Tim