How use devcon.exe to install driver with detachedprogram?

Hi:

I'm working on a boot from floppy with normal Windows XP CD (not custom CD) unattended install. I'm trying to install motherboard NIC drivers as early as possible in the uninstall sequence -- at [GUIUnattended] using detachedprogram. But it appears that while setup picks up the .cmd file, it doesn't appear to execute the commands within it: specifically the devcon.exe installation of the drivers, and the echo to diskette that I'm using to confirm entry and exit from the .cmd file. I don't get any detached.log file at all, whereas I am able to get .log files at later stages of the setup.

The general problem is installing NIC drivers for which Windows XP has no default. The file contents are shown below. Thank you for your help.

-- Roy Zider

winnt.sif:

----------

[GuiUnattended]

detachedprogram = "%systemroot%\system32\cmd.exe"

arguments = "/c a:\detached.cmd"

detached.cmd:

-----------------

echo entering %0 >a:\detached.log

start /wait A:\devcon1 update A:\DRIVERS\NIC\nvenetxp.inf "PCI\VEN_10DE&DEV_0066"

start /wait net use \\MPX\HPLaserJ /user:Administrator <password>

net view >>a:\detached.log

net view \\mpx >>a:\detached.log

echo exiting %0 >>a:\detached.log