I CAN'T BELIVE IT!!! IT'S WORKING!!!
So... here is what i did... after 3 painful days:
After i created the Windows XP SP2 image on the disk with the RIS Wizard i had to include the drivers.
The computer is a Toshiba Portege R100 so i went to
http://support.toshiba.com and got the driver for the LAN card (an Intel Pro 100 based card).
After 100000 hours of research i found this file on the Intel site that fixes the text based part of the setup. You can download the file here
e100b325.exe.
so...
1. Create the "$oem$\$1\Drivers\NIC" folder in the ROOT ("\RemoteInstall\Setup\LANGUAGE\Images\YOURIMAGE\" so at the same level of the i386 folder)
2. Modify the ristndrd.sif file included in the subfolder \Templates\ in the i386 folder with the following part:
CODE
[Unattended]
DriverSigningPolicy = Ignore
OemPreinstall = yes
OemPnpDriversPath = Drivers\NIC
3. Extract the driver you downloaded from toshiba to the \NIC\ folder
4. Extract and overwrite the e100b325.inf file in the i386 folder with the file included in the e100b325.exe file you downloaded.
5. Copy e100b325.sys, e100bmsg.dll and intelnic.dll from the toshiba driver over to the i386 folder (overwriting e100b325.sys)
6. Stop and restart the binslvc service (net stop binslvc, net start binslvc)
AND THAT'S IT!!!
Damn... so much time for just 1 computer

But it's worthit