File list (Check if you may need any files):
USB_Modem_Driver
................\USB Modem Driver
................\................\DelRestore.Desc
................\................\MTK GPRS USB Modem.inf
................\................\UMSS.INF
................\................\UMSS.sys
................\................\UMSSPDR.pdr
................\................\usb2ser_2k.inf
................\................\usb2ser_2k.PNF
................\................\USBCDC.INF
................\................\usbser.sys