Hi, I am from Turkey, Istanbulwe are using debian and debian installer for our customized distribution named MAGMA. MAGMA uses etch's graphical installer and has 3 variants. MAGMAserver , MAGMAdesktop and MAGMAdeveloper.
Installation begins in Turkish and most of it is automated by preseeding. If you want/need help i can. Regards Cavit Cahit VURAL