Do you know if there exist a fancier user interface for Dwarf Fortress instead of the ASCII one?
Unfortunately, the only official dwarf fortress is the ASCII you know and love (or hate!). You've got several options, however:
-Download a graphics pack mod, turning all the ascii characters into small images instead.
-External utilities like Dwarf Therapist can make assigning jobs much easier.
-Download an external viewer, like Stonesense, to view your dwarf fortress in "glorious" isometric 3d.
I'd suggest the Lazy Newb pack as a great place to start. It includes several different tile sets, as well as many useful utilities (like Dwarf Therapist and more).