pxeboot and install linux,help!

["Huter.Liu" <huter xtu edu cn>]

hi,everyone!
     I have some computers without floppy disk driver or CDROM, but each one have a pxe bootable NIC(8139 and 3com905cx-tx-m, I want install redhat 7.3 on this computers, my step:
    1.setup one FTP server (serverA) base on Linux 7.3 with ip address 192.168.0.224,copy all files from 7.3 disc to /var/ftp/redhat; one DHCP server (serverB) base on WIN2000 with ip address 192.168.0.1, all computer on our LAN can get a ip address automatically. I use one computer with floppy disk driver and a bootnet floopy disk to boot, and I try install via FTP method, from serverA, everything is ok,I installed linux 7.3 on that computer.
    2.I want to boot from network and install linux via ftp, so I found something useful for me.first I found there is a pxe daemon,so I use rpm -ql pxe and I found the document is /usr/share/doc/pxe-0.1/README, so I read it, and found it's a good choice for me.so I tried it out, but failed at last:
    a.)I enable pxe and tftp on serverA, and I enable boot from LAN on my computers to be install linux, I'm sure that "The PXE daemon is NOT used on dhcp server", because dhcp server is that WIN2000 server, serverB.
    b.)I noticed(from README):
To enable the remote  Linux installation, you must add two more files to the ftpboot/X86PC/UNDI/linux-install/ directory.  These files are:
       linux.1  (The Linux kernel)  and
       linux.2 (The Linux installation initrd image)
I copy the  initrd.img and vmlinu files from redhat disc1 /image/pxeboot/ and rename  vmlinu to linux.1, initrd.img to linux.2, I use tftp to get the two files ,is ok:
[huter serverA huter]$ tftp 192.168.0.224
tftp> get X86PC/UNDI/linux-install/linux.1
Received 1049027 bytes in 0.7 seconds
    c.)I modified /etx/pxe.conf and disable multicast:
[Discovery_MCast_Disabled]
1
and in /etc/mtftpd.conf:
[IsMulticastEnabled]
0
    d.)Begin boot and install, messages:
DHCP MAC AA AA AA AA AA AA 
DHCP ..

CLIENT IP:192.168.0.118 MASK:255.255.255.0
DHCP IP:192.168.0.1 PROXY IP:192.168.0.224
GATEWAY IP:192.168.0.1

Press F8 to view menu....(10)

Local Boot
Remote Install Linux
>!Chose Remote Install Linux
BD...

BOOT SERVER IP:192.168.0.224
Intel Linux NBP, beta-3(build 003)
Press any key to enter kernel parameters.....(5)
>!do nothing and wait timeout
Downloading Linux kernel image...
Downloading initrd image...
Uncompressing Linux...Ok,booting the kernel.
_(blinking)
    system halt here,the Caps Lock and Scroll Lock blinking, ctrl+alt+del can't reboot.
The CPU is Intel P4, I changed some mainboard and get the same result,Is it a hardware panic or my boot server setup wrong parameters??
     Thanks!