On the Windows XP CD, in the SUPPORT\TOOLS directory, there is a file called DEPLOY.CAB.

1. Extract the programs DEPLOY.CHM (help file) and SETUPMGR.EXE (main program).
    
2. Run SETUPMGR and answer the prompts.
    
3. This will create both a unattend.bat and unattend.txt file you can use for automated installs.
    
4. Note: The batch file might need some minor modification for file locations but it is fairly basic.