Changing start screen

Hy,Starting boot screen, when pc turns on, shows a baltix distributor (ubuntu for baltic countries) logo. I wanna to change it, but havo no ideas, how to do it. Can you help?Thanks a lot.

sudo aptitude install

sudo aptitude install usplash-theme-ubuntu then sudo dpkg-reconfigure usplash Alternately you could try this http://doc.gwos.org/index.php/Different_usplash