Setting up PXE boot for Ghost 8.0 on a w2k3 without using RIS

i am trying to ghost (creating/restoring images) computers in my company using ghost 8.0 . I have decided to use pxe boot in lieu of creating floopy/cd boot disks because i have several computers with different network cards. i have setup a ghost server that is running W2K3 it has a DNS, ACTIVE DIRECTORY, DHCP services, TFTP and has GHOST 8.0. i set this server up for PXE BOOT using the instructions on this url:

 http://unattended.sourceforge.net/pxe-win2k.html

 i am not sure if that is the correct way to set it up for w2k3. anyways my dhcp is working fine and its assigning ip to the computers, tftp is running fine. the computers we buy are fortunately already set up for pxe boot. i have experimented with them and they do recognize the tftp connections when i press F12 as they boot. however they give an error message saying TFTP FILE NOT FOUND. i am assuming the computers are looking for the the boot image which i created with Ghost boot wizard here are the steps :

Go to Start -> All Programs -> Symantec Ghost -> Ghost Boot Wizard2.->TCP/IP boot ->PXE Packet driver->pc-dos ->symantec ghost client->dhcp->image file name(which i save in c:\imagebootfile.sys)

actuallys according to http://unattended.sourceforge.net/pxe-win2k.html  i have edited the registry to point to this image file.[ in hkey_local_machine\system\currentControlSet\services\tftpd  add a subkey "parameters" to the tftpd folder. Add a string value "Directory" to the "parameters" key. Give "Directory" the path location where your boot image file is located. (example c:\imagebootfile.sys)].

I am clearly missing something and would appreciate your help. i have researched other peoples solutions which mention setting up a boot file in linux i do not have access to linux and i am sure there are alternatives to that.
Please give me a step by step exlanation on how to setup PXE on both the server and clients
How to get it to work with Ghost 8.0 (im i using the right options when creating a boot images? Is the boot image prepared separate from ghost[not using ghost boot wizard]?)
Could my network be the problem, i have a hub a server and 2 computers connected to it just as demo test? however if that is the case please go ahead and give the step by step solution for setting up a pxe boot with ghost. network setup is the least of my problems.
thank you in advance!