Can you change the image after creation

Hi.
I am totally newbee. I have installed the pxes booting from server with tftp.
I have got a friend with Linux to build the image and have exported it to min 2003 server. It works fine.
I have some very basic question, and hoping for some answers as i then can progress with learning more about the system:
1. MY ip has changed for my rdp server. When starting the image witch boots with default into RDP, it fails due to wrong ip address. I want to change it. it points to /bin/drpdesktop1.4. Is there any way i can access this, change it so it changes the image on server?. If not, i ave understood you can create a file within the tftp library on server where this info can be added. What should i call that file, where to store it and how to get the image to look for it. Hope somone out there has some patient with me. I have read all the doc, and i am sure the explenation is there somwhere, but i cant transfere any of that into solving my problem as i may not understand as i need more basic intro.
System installed on win2003 server under
C:\tftp\pxes

Thank you in advance

Kind regards
Morten


-----------------------------------------
Email sent from www.ntlworld.com
Virus-checked using McAfee(R) Software 
Visit www.ntlworld.com/security for more information



-------------------------------------------------------
This SF.Net email is sponsored by xPML, a groundbreaking scripting language
that extends applications into web and mobile media. Attend the live webcast
and join the prime developer group breaking into this new coding territory!
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642