xkbmap option not working with XDMCP

[FELIX DIAZ DE RADA QUINTANA]

Hi all:
 
I have tried to run XWin in XDMCP mode using the -query option.
Due to I don't have a US keyboard, I compiled the spanish map using the
xkbcomp utility and then I left the resulting file (es.xkm) at the /tmp
directory.
 
But when I run XWin using "+kb -xkbmap es" options, the server doesn't read
this map file (error opening.. reverting to defaults...), and even, the file
disappears in the /tmp directory. It seems that XWin deletes the es.xkm
file!
 
If somebody knows what I am doing wrong, please help me.
 
Thanks in advance,
 
Felix Díaz de Rada