请教各位高手－－关于多块卡用同一个wdm驱动的inf写法

当小弟尝试多块pci卡用一个wdm驱动发现在安装第二块的时候，安装出错，错误为：：windows 无法为这个设备找到一个驱动程序

小弟的inf如下：
;--------- Version Section ---------------------------------------------------

[Version]
Signature=\"$Windows 95$\"
Provider=%ProviderName%

; If device fits one of the standard classes, use the name and GUID here,
; otherwise create your own device class and GUID as this example shows.

Class=NewClass
ClassGUID={ff646f80-8def-11d2-9449-00105a075f6b}

;--------- SourceDiskNames and SourceDiskFiles Section -----------------------

; These sections identify source disks and files for installation.  They are
; shown here as an example, but commented out.

;[SourceDisksNames]
;1 = \"Install Disk\",Disk1,,

;[SourceDisksFiles]
;DrvAv800.sys = 1,,

;--------- ClassInstall/ClassInstall32 Section -------------------------------

; Not necessary if using a standard class

; 9X Style
[ClassInstall]
Addreg=Class_AddReg

; NT Style
[ClassInstall32]
Addreg=Class_AddReg

[Class_AddReg]
HKR,,,,%DeviceClassName%
HKR,,Icon,,\"-18\"

;--------- DestinationDirs Section -------------------------------------------

[DestinationDirs]
DrvAv800_Files_Driver = 10,System32\\Drivers

;--------- Manufacturer and Models Sections ----------------------------------

[Manufacturer]
%MfgName%=Mfg0

[Mfg0]

; PCI hardware IDs use the form
;   PCI\\VEN_aaaa&DEV_bbbb&SUBSYS_cccccccc&REV_dd
;
%DeviceDesc%=DrvAv800_DDI, PCI\\VEN_1105&DEV_8475&SUBSYS_00021105&REV_01