Hi Les,
Don't worry about my methodology! 
I always appreciate help!
I will show you my winnt.sif script:
Here we go: ;SetupMgrTag
[Data]
AutoPartition=1
MsDosInitiated="0"
UnattendedInstall="Yes"
[Unattended]
UnattendMode=FullUnattended
OemSkipEula=Yes
OemPreinstall=No
TargetPath=\WINDOWS
[GuiUnattended]
AdminPassword=*
EncryptedAdminPassword=NO
AutoLogon=Yes
AutoLogonCount=1
OEMSkipRegional=1
TimeZone=35
OemSkipWelcome=1
[UserData]
ProductID=FCKGW-RHQQ2-YXRKT-8TG6W-2B7Q8
FullName="CDL"
OrgName="CDL"
ComputerName=*
[Components]
accessopt=ON
calc=ON
certsrv=On
certsrv_client=On
certsrv_server=On
charmap=ON
chat=On
Deskpaper=On
Dialer=On
Fax=On
Fp_extensions=On
Fp_vdir_deploy=On
freecell=on
hearts=on
hypertrm=on
ieaccess=on
iis_common=on
iis_ftp=on
iis_htmla=on
iis_inetmgr=on
iis_nntp=on
iis_nntp_docs=on
iis_pwmgr=on
iis_smtp=on
iis_smtp=on
iis_smtp_docs=on
iis_www=on
iis_www_vdir_printers=on
iis_www_vdir_terminalservices=On
iisdbg=on
indexsrv_system=on
licenseserver=on
media_clips=on
media_utopia=on
minesweeper=on
mousepoint=on
mplay=on
msmq_adintegrated=on
msmq_core=on
msmq_httpsupport=on
msmq_localstorage=on
msmq_mqdsservice=on
msmq_routingsupport=on
msmq_triggerservice=on
msnexplr=on
mswordpad=on
netcis=on
netoc=on
objectpkg=on
paint=on
pinball=on
rec=on
reminst=on
rstorage=on
solitaire=on
spider=on
templates=on
terminalserver=on
tsclients=on
tswebclients=on
vol=on
wms=on
wms_admin_asp=on
wms_admin_mmc=on
wms_server=on
zonegames=on
[RegionalSettings]
LanguageGroup=1
SystemLocale=00000c0c
UserLocale=00000c0c
InputLocale=0c0c:00011009
[Identification]
JoinWorkgroup=CDL
[Networking]
InstallDefaultComponents=No
[NetAdapters]
Adapter1=params.Adapter1
[params.Adapter1]
INFID=*
[NetClients]
MS_MSClient=params.MS_MSClient
[NetProtocols]
MS_TCPIP=params.MS_TCPIP
MS_NetBEUI=params.MS_NetBEUI
[params.MS_TCPIP]
DNS=No
UseDomainNameDevolution=No
EnableLMHosts=Yes
AdapterSections=params.MS_TCPIP.Adapter1
DNSSuffixSearchOrder=171.16.1.8,171.16.1.9
[params.MS_TCPIP.Adapter1]
SpecificTo=Adapter1
DHCP=No
IPAddress=171.16.1.129
SubnetMask=255.255.255.0
DefaultGateway=171.16.1.1
DNSServerSearchOrder=171.16.1.8,171.16.1.9
WINS=Yes
WinsServerList=171.16.1.8,171.16.1.9
NetBIOSOptions=0
[TapiLocation]
CountryCode=107
What you see here is almost the final copy of the winnt.sif script that i made. So i put this ASCII file on a floppy and i put windows XP professional in the CDROM drive. A few things have to be checked before starting the installation:
1- i assure myself that the BIOS is configured with the first boot device being the cd-rom.
2- I assure myself that the active partition is a FAT32 with at least 4GIG of space. (I don't want NTFS for reasons that are out of context here)
3- Format the active partition
Then i simply have to start the cpu and press the spacebar when i see boot from cd-rom... Windows XP looks for a floppy that have a winnt.sif file on it and if it's the case... Bingo! The automated installation begins.
And when i come back some minutes later, the installation is over. The thing is that the IP is always the same (no DHCP there) and the script generate a weird PCname that doesnt match our criteria.
And as i told you in the preceding note, i don't want to make a winnt.sif file for every employee.. Altough, this would not be hard all i would need is to change the IP address , PCname and a few other things.
Frédéric