1st of all, you need to be on maemo 5 and have a text editor such as leafpad (my preferred, more user friendly than vi) installed and of course you need to be in root to do this ! ;) run a xTerm session root (or sudo gainroot, depends if you are in RD mode or not, or if you have installed another package to get the root access) mount -t ext3 -o noatime,rw /dev/mmcblk1p2 /and leafpad /and/system/build.prop then search for the line "f.lcd_density=160" and replace it by "f.lcd_density=240" (without the quotes - by the way, if it's too big for you, you can enter any number that you want but i would not recommand you to go beyond 240) after that save it by clicking the upper contextual menu exit leafpad exit xTerm reboot your device and voilaaaa !