when i go to the k desktop enviroment it is all to small to see cant even work out how th change it pleas help
I saw this using EDID. And if you are not using EDID this will probably not work for you.
try adding this entry to /etc/X11/xorg.conf below
Option "UseEDIDDpi" "false"
Attached the xorg.conf i used below 0710 (IIRC) and the one I now use in 0810.
You might have to disable a script to keep LinuxMCE from overwriting your changes
See here : http://wiki.linuxmce.org/index.php/Custom_Display_Resolutions#Prevent_LinuxMCE_from_changing_the_Xorg_config