devcon.exe and unattended install from floppy

Hi:

I'm using devcon.exe to install a NIC driver in an unattended install
from a boot floppy and the vanilla distribution Window XP CD (i.e.,
not a custom boot CD with answer files,drivers, etc on the custom CD).

The problem is that while the finished install shows the driiver
installed (in Device Manager), the network information, joining the
workgroup (not WORKGROUP), and the attachment to the network printer
are not being completed.

I'm assuming it's because the network adapter is not being installed
early enough in the installation process. Is there some way to get
devcon.exe to execute in the text mode setup part of the install, when
the txtsetup.oem file is being executed?

Thank you for any light you can throw on this problem.

-- Roy Zider

I'm trying all known methods:

Sections of winnt.sif:
------------------------------
[GuiUnattended]
detachedprogram = "a:\gronce.bat"

[SetupParams]
UserExecute=a:\GROnce.bat"

[GuiRunOnce]
"A:\GRonce.bat"

Content of gronce.bat:
-------------------------------
start /wait A:\devcon update A:\DRIVERS\NIC\nvenetxp.inf "PCI
\VEN_10DE&DEV_0066"
start /wait net use \\MPX\HPLaserJ /user:Administrator <password>
REM not required rundll32 printui.dll,PrintUIEntry /in /n \\MPX
\HPLaserJ

FUBARinSFO
Wed Mar 26 13:09:37 CDT 2008

Correction: this is not a boot from floppy, but a boot from CD of a
normal Windows XP boot CD with a floppy inserted at boot time
containing winnt.sif and drivers to be installed.