[Koha] Command not found

Hi to all i try to install koha 3 on ubuntu 8.04 all ok but when run the command : 1- /usr/share/koha/bin/koha-zebra-ctl.sh start 2- /usr/share/koha/bin/koha-zebraqueue-ctl.sh start not runing and the result command not found please if any body can help me send to me i cant install zebra thnks _________________________________________________________________ More than messages–check out the rest of the Windows Live™. http://www.microsoft.com/windows/windowslive/