OK .. I've read all about Matrox .. and fixed my mtxpar.inf file ... modified MtxSetup.ini with 'silent' settings .. pointing to my G550.inf and copied MtxSetup.ini to Setup.ini Server2008 installs the 'Standard VGA' drivers. But if I go into Device-Manager and delete it .. and reboot, the Matrox G550 drivers get loaded. How do I get the unattended install to use the correct matrox drivers first???? some background .. I extracted the matrox files ... modified them .. then used Ryan's VistaTool to load the drivers. Looks like the drivers aren't certificated correctly???????? Here's a clip of the 'setupapi.dev.log' from Windows subdirectory: inf: Opened INF: 'C:\Windows\System32\DriverStore\FileRepository\g550.inf_36518b80\g550.inf' ([strings] <src=drvstore>) inf: Saved PNF: 'C:\Windows\System32\DriverStore\FileRepository\g550.inf_36518b80\g550.PNF' (Language = 0409) sig: {_VERIFY_FILE_SIGNATURE} 21:03:58.109 sig: Key = g550.inf sig: FilePath = C:\Windows\System32\DriverStore\FileRepository\g550.inf_36518b80\g550.inf sig: Catalog = C:\Windows\System32\DriverStore\FileRepository\g550.inf_36518b80\G550.cat ! sig: Verifying file against specific (valid) catalog failed! (0x800b0109) ! sig: Error 0x800b0109: A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider. sig: {_VERIFY_FILE_SIGNATURE exit(0x800b0109)} 21:03:58.218 sig: {_VERIFY_FILE_SIGNATURE} 21:03:58.218 sig: Key = g550.inf sig: FilePath = C:\Windows\System32\DriverStore\FileRepository\g550.inf_36518b80\g550.inf sig: Catalog = C:\Windows\System32\DriverStore\FileRepository\g550.inf_36518b80\G550.cat sig: Success: File is signed in Authenticode catalog. sig: Error 0xe0000242: The publisher of an Authenticode signed catalog has not yet been established as trusted. sig: {_VERIFY_FILE_SIGNATURE exit(0xe0000242)} 21:03:58.296 dvi: Created Driver Node: dvi: HardwareID - PCI\VEN_102B&DEV_2527&SUBSYS_22C0102B dvi: InfName - C:\Windows\System32\DriverStore\FileRepository\g550.inf_36518b80\g550.inf dvi: DevDesc - Matrox Millennium G550 PCIe dvi: DrvDesc - Matrox Millennium G550 PCIe dvi: Provider - Matrox Graphics Inc. dvi: Mfg - Matrox Graphics Inc. dvi: ModelsSec - Mfg.Matrox.NTamd64 dvi: InstallSec - IN00 dvi: ActualSec - IN00 dvi: Rank - 0x0fff0001 dvi: Signer - Matrox Graphics Inc. dvi: Signer Score - Authenticode dvi: DrvDate - 04/13/2007 dvi: Version - 5.99.5.0