Quick instalation dvd network boot

Can somebody please help me (if it's possible) with getting a latop booting in the quick install dvd over the network? I spent 1 day and 1 night on this but I can't get it to work. I have a dhcp server running as well as a tftpd server. I tried to use PXELinux and then load the vmlinuz and initrd files (from the casper map on the dvd) but the system hangs at a surtain moment. I think that's because it can't find some files it needs. I use this way of instalation becuase the dvd drive is broken in that laptop. I'm sorry for my poor English (I'm Dutch) but I hope you can understand it and help me.