[T-Mobile LG G2x] Core Memory:
Is C:\Windows\inf\oem196.inf there?

This is what's in that file:

;*****************************************************************************
; Name: lgusbdiag.inf
;*****************************************************************************

[Version]
signature = "$WINDOWS NT$"
Class = Ports
ClassGuid = {4D36E978-E325-11CE-BFC1-08002BE10318}
Provider = %Provider%
DriverVer = 02/14/2011,4.9.8.1
CatalogFile = lgdriver32.cat

[ControlFlags]
ExcludeFromSelect = *

[SourceDisksNames]
; diskid = description[, [tagfile] [, <unused>, subdir]]
1=%DiskString%,"lgusbdiag.sys",,

[SourceDisksFiles]
; filename = diskid[,[ subdir][, size]]
lgusbdiag.sys = 1

;-----------------------------------------------------------------------------
; Specify target paths...
;-----------------------------------------------------------------------------

[DestinationDirs]
DefaultDestDir = 12	; system32\drivers
CopyFiles = 12 ; system32\drivers
CopyFiles.Win2K = 12 ;

;-----------------------------------------------------------------------------
; Table of Contents
;-----------------------------------------------------------------------------
[Manufacturer]
%LGSI%=LGSI

;-----------------------------------------------------------------------------
; Device-by-device entries
;-----------------------------------------------------------------------------
[LGSI]
; For individual driver
%Lgsi.Comm.Desc% = LGSI.Install, USB\VID_1004&PID_6000_DIAGInterface

;-----------------------------------------------------------------------------
; Installation instructions
;-----------------------------------------------------------------------------

[Lgsi.Install.nt]
AddReg	= Lgsi.AddReg,Lgsi.NT.AddReg
CopyFiles	= CopyFiles, CopyFiles.Win2K

;-----------------------------------------------------------------------------
; Registry
;-----------------------------------------------------------------------------

; common registry entries
[Lgsi.AddReg]
HKR,,NTMPDriver,,lgusbdiag.sys

; only for NT...
[Lgsi.NT.AddReg]
HKR,,PortSubClass,1,01
HKR,,EnumPropPages32,,"MsPorts.dll,SerialPortPropPageProvider"

;-----------------------------------------------------------------------------
; Copy lists
;-----------------------------------------------------------------------------
[CopyFiles]

[CopyFiles.Win2K]
lgusbdiag.sys

;-----------------------------------------------------------------------------
; NT Services installation
;-----------------------------------------------------------------------------
[Lgsi.Install.NT.Services]
AddService = UsbDiag, 0x00000002, Lgsi.Install.AddService

[Lgsi.Install.AddService]
DisplayName	= %Lgsi.Service.Name%
Description	= %Lgsi.Service.Desc%
ServiceType	= 1	;%SERVICE_KERNEL_DRIVER%
StartType	= 3	;%SERVICE_DEMAND_START%
ErrorControl	= 1	;%SERVICE_ERROR_NORMAL%
ServiceBinary	= %12%\lgusbdiag.sys

;-----------------------------------------------------------------------------
; STRINGS
;-----------------------------------------------------------------------------
[Strings]

Provider = "LG Electronics Inc."
Lgsi = "LG Electronics Inc."
DiskString = "LGE USB Serial Port Drivers installation disk"
Lgsi.Comm.Desc = "LGE Mobile USB Serial Port"
Lgsi.Service.Name = "LGE Mobile USB Serial Port"
Lgsi.Service.Desc = "LGE Mobile USB Serial Port"
CustomerDataPath = "LGE USB Mobile Diagnostic Kit"
DriverSet = "LGE USB Mobile Modem Software"