Thanks for the extensive help.

You were talking about problems with the sleep function, is this when you put the screen lid down ?

Okay, i think i'd rather buy the case completed, without having to fix and trix with the case to make it fit, so the 9,5 mm case is the one for me ? :)

If I now have a pata interface and through the case install a Sata 2,5" harddrive, am I going to have any other problems? other then the sleep problem you mentioned ?

I will try to get some free time this weekend to open up my MBP..

Thanks again Roger, I know I have a lot of questions but I love being on the safe side when it comes to computers :)