[Udpcast] deactivate bootp?

Hello, i builded a initrd for udpcast with cast'o matic and one with the command line tool. With both initrd linux trys to configure ip settings with bootp, but i have no bootp server in the network. Can i deactivate it or change it to dhcp? In config file the makeImage program is dhcp switched to "yes" I tryed also to change the dhcpd.conf with the two parameters: allow bootp; allow booting; but no success. Any Ideas? kind regards, Markus