RIS .sif file question regarding adding computer to domain

Hello,

I have RIS up and running, and configuring new XP builds via an answer file.
It will go through to completion without errors, but with a problem. If I
specify a computername (which I want to do), then it appears the computer
name is changed after the OS installation, but the computer is not added
back to the domain after the name change. Then I have to go through the
"Welcome" Q&A, and then manually change the name.

If I leave the computername alone, then it works ok. It gets added to the
domain under the normal "Username1", and there are no problems. But I want
to specify the computername in the .sif file, so that I dont have to go
through changing the name post-installation.

I have looked through all the answer file documentation, and I dont see a
setting to change the computername during the CIW process, before the
installation starts. If I could change it there, then I would not need to
change it under the [userdata] section of the .sif file, and the computer
would get the new name during the setup process, would be added to the
domain, and have the OS installed.

I think I would have two ways to do this:

1) Find a way to force a specific computer name to be used during the setup
process, so that I would see a screen similar to this;

The following settings will be applied.....
Computer account: COMPUTER1 <--------Specified by me instead of "USERNAME1"
Global Unique ID: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Server supporting the computer: RIS1
.................................................. ......

2) Figure out how to add the computer back to the domain under the new name,
post installation.

Thanks,
Jason

=======================================

Here is my answer file.

;SetupMgrTag
[Data]
AutoPartition=1
MsDosInitiated="1"
UnattendedInstall="Yes"
floppyless="1"
OriSrc="\\%SERVERNAME%\RemInst\%INSTALLPATH%"
OriTyp="4"
LocalSourceOnCD=1

[SetupData]
OsLoadOptions="/noguiboot /fastdetect"
SetupSourceDevice="\Device\LanmanRedirector\%SERVE RNAME%\RemInst\%INSTALLPATH%"

[Unattended]
UnattendMode=FullUnattended
OemSkipEula=Yes
OemPreinstall=No
TargetPath=\WINDOWS
FileSystem=LeaveAlone
NtUpgrade=No
OverwriteOemFilesOnUpgrade=No

[GuiUnattended]
AdminPassword=db37xxxxxxxxxdcd7c247fa83aad22724176 60202b9c323825cda13536
EncryptedAdminPassword=Yes
OEMSkipRegional=1
TimeZone=%TIMEZONE%
OemSkipWelcome=1

[UserData]
ProductKey=xxxxx-xxxxx-xxxxx-xxxxx-xxxxx
FullName="mps"
OrgName="mpsDEV"
ComputerName="TESTXP"

[Display]
BitsPerPel=16
Xresolution=1024
YResolution=768

[TapiLocation]
CountryCode=1
Dialing=Tone
AreaCode=970
LongDistanceAccess="9"

[SetupMgr]
DistFolder=C:\windist
DistShare=windist

[Branding]
BrandIEUsingUnattended=Yes

[url]
Home_Page=www.yoyo.com

[Proxy]
Proxy_Enable=0
Use_Same_Proxy=1

[Identification]
DoOldStyleDomainJoin=Yes
DomainAdmin = admin
DomainAdminPassword = password
JoinDomain="%MACHINEDOMAIN%"

[Networking]
InstallDefaultComponents=Yes
ProcessPageSections=Yes

[RemoteInstall]
Repartition=Yes

[OSChooser]
Description="Windows XP Professional - Floor"
Help="This will install Windows Professional in a standard configuration
for all floor users"
LaunchFile="%INSTALLPATH%\%MACHINETYPE%\templates\ startrom.com"
ImageType=Flat