i have editeda Style (fluxbox) so that the when the style is loaded, it will load the wallpaper
fbsetbg -F /usr/share/fluxbox/backgrounds/Serbian_Frost.jpg

when i start the style i get tis error message:
fbsetbg: Something went wrong while setting the wallpaper.
Run 'feh --bg-scale /usr/share/fluxbox/backgrounds/Serbian_Frost.jpg' form an xterm to find out what.

i did so and i got this:
feh WARNING: /usr/share/fluxbox/backgrounds/Serbian_Frost.jpg - No Imlib2 loader for that file format

i downloaded imlib2-1.2.1.tar.gz from http://sourceforge.net/project/showfiles.php?group_id=2 ( at the buttom)

what is wrong? do i need a newer version of imlib2 ? i tried to install imlib2_loaders-1.2.1.tar.gz from the same page but i got an error: loader_db.c:23:14 error: Edb.h No such file or directory, and a whole bunch of other errors pointing to this file.

i am new to linux (4 days)
im stuck here.. what is wrong? what should i do?

See the imlib README and ./configure --help and make sure you've satisfied all the dependencies.
Go to http://www.enlightenment.org/ there you should find information for imlib edb and the other components.