MS DevCon utility doesn't work on ReactOS when Non-PNP driver installation feature is used, it returns a "devcon failed" error with no actual return code when the proper command line is given.
Other options work well under ReactOS.
DevCon Utility can be found in the following URL: http://support.microsoft.com/kb/311272
For this test, i tried to install the the latest compatible WDM drivers for the VMware SB16 card, which is a Non-PnP variant. VMware SB16 emulation isn't available from the graphical console frontend, but can be enabled adding the "sound.virtualdev = "sb16"" line to *.vmx vm configuration file.
Drivers used for this test are available here: http://www.mediafire.com/download/52a9c9t670ab6ps/CT16Drv.rar
The command line used to install the drivers for this test:
devcon install ctsbwdma.inf "*PNPB003"
Where *PNPB003 is the actual node that should be used to make the PnP manager recognize this non-pnp card model.
The same line works well under Windows XP.
For this test i tried with the SB16 drivers, but this also can be observed on drivers with no actual physical hardware to be recognized by the PnP manager, like the MS LoopBack adapter, TUN/TAP virtual ethernet cards, and such.
DebugLog for the whole test is provided.
Some info URLs about the stuff that "devcon install" actually does: