kickstart installation ubuntu through boot problem

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http://askubuntu.com – when i started the kickstart installation giving the http address of kickstart file it says file not found i am giving file=myip/ubuntu/preseed/ubuntu.seed boot=casper initrd=myip/casper/initrd.lz file=myip/ks.cfg -- IP i am giving through http but it says file not found is it a method to give the boot menu or any other method to get the kickstart done? (HowTos)