Those instructions are for EEEPC 701 version (640x480x16bpp splash screens, eg. vga=785 boot param)
To do that, open the terminal with Ctrl+Alt+t and type
wget http://linux.voyager.hr/eee/fb2tga.txt -O fb2tga.pl ; chmod +rx fb2tga.pl wget http://linux.voyager.hr/eee/tga2fb.txt -O tga2fb.pl ; chmod +rx tga2fb.pl
apt-get install gimp
for startup splash screen or
for shutdown splash screen. Perl script will create /boot/startup.tga (or /boot/shutdown.tga).
Make your changes, and save a .tga file. IMPORTANT: when saving, gimp will ask you for two parameteres “RLE compression” and “origin at bottom left” - you MUST uncheck both of them. It won't work otherwise.
./tga2fb.pl /boot/startup.tga ./tga2fb.pl /boot/shutdown.tga
That's it. You should enjoy your new splash screens on startup and shutdown now.