hi charlie,
it is an full remote with extra dvd controls like ff,rew, viewing angle, chapter select etc. it also incorporates all the normal ps2 contoller functions.
it works by putting an infra-red receiver into one of the control ports.........first you must copy files from a supplied cd which are copied to your 8mb memory card and then it will function fully.
it worked ok when i had a neo 2.2, only after i got the magic2 chip it stopped working.
hope this explains it well enough for you