CD stuck on Comand 2.0, please read...

I have a friend that have a cd stucked on his comand, and before that he allready had some problems to ejject the cds... So the only way out its to open up the comand and clean all the mechanics inside!
Any one know where to find info how to do that, or just to open the comand???
I just don't want to start messing arround with no idea what to expect...
Thanks



