Ok its in and everything is working.
Firstly it works very simply you press the CD button twice and the ipod is connected and starts playing. you skip tracks just like you would with a normal cd. When you switch the car off then back on playback resumes from the same position. The sound quality is much better than one of those FM modulators and it tucks away hidden in the glove box.
The only recommendation I have is that you make playlists otherwise it plays the songs alphabetically by album so if you want to play a track near the end you have to press the next button a thousand or more times (depending on the size of the ipod and how many songs on it of coures).
I havn't tried controlling it from the ipod yet but might try that next time I'm in the car. It also charges the Ipod at the same time. I also havn't tried using the line in line that also comes with the adapter either.
If you I've missed something you want to know let me know
Also Big thanks to mxMania who fixed my problems up and helped me install the ipod adapter. For those who havn't been there they where very friendly and very helpful. After pulling half my car apart with them, we found the easiest way to install this adapter would be to just pull the glovebox off (very easy just a clip) and reach around and plug the adapter straight in.