PXE-TO2: Access Denied

Hi, I have a RedHat Enterprise Server 4, with a DHCP server, and a
TFTP server running under xinetd. I am trying to PXE boot another
machine off of that. In the TFTP server configuration file the default
directory /tftpboot is specified, in there I have the file pxelinux.0
(referenced by the DHCP server configuration file), subdir pxelinux.cfg
and file "default" in there.

OK, when I try to remote PXE boot, the remote machine gets the IP
address from DHCP, and I can see that the TFTP server is contacted, but
then the PXE boot screen shows

PXE-T02: Access denied

I tried to make all permissions 777 for all files inside /tftpboot,
same error.

If I try to make the permissions 777 for /tftpboot itself, I get a
different error
PXE-T01: File not found


Does anybody know what I could be doing wrong? Thank you. Mark Galeck

.