problem with xmodmap

[dawnshade]

Hi, All.

i have some strange problem with xmodmap.
if i configured map somekeys in conf file:

cat .Xmodmap
keycode 174 = XF86AudioLowerVolume
keycode 176 = XF86AudioRaiseVolume

and try load this settings putting string 'xmodmap ~/.Xmodmap' in 
file .xinitrc (at homedir) before string startkde nothing happens.

if i execute xmodmap ~/.Xmodmap  inside KDE all works fine, but in next KDE 
session X11 forget this mapping.
any ideas?
(i read FAQ at http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/x.html 
12.21 section)