Ok. I was reading that this requires lots of work like cutting parts of the tower with a saw and i don't feel very confident in doing do-it-yourself stuff. :-D
Anyway, what whould be the requirements of this pc tower in dimentions, psu, etc.? How should i ask it, in a computer shop?
Well, it involves some work, but it's not impossible.
The inside requirements for the tower would be the size of the desktop case, preferable with a 4-5 cms more, so you don't get into troubles with the Mediator extension and installation of the accelerator.
The inside of the tower shouldn't have the PSU or hdd and cd mounting rails covering the mounting side of the tower. The mounting side must be a plain area, otherwise it will be difficult to install the A1200 motherboard.