Driver ARK3116 don't create /dev/ttyUSB

[Markos <markos@c2o.pro.br>]

Hello,

I am trying to use a USB-to-IrDA converter by ARKMICRO (with Debian 5.0
Lenny) 

i searched on internet and the appropriate driver should be ark3116 but
the interface isn't recognized and no device /dev/ttyUSB is created.

How can I make this driver recognize this interface to create the device
(/dev/ttyUSB)

After plug the converter the output of dmesg:

usb 3-1: new full speed USB device using uhci_hcd and address 3
[13039.814371] usb 3-1: configuration #0 chosen from 1 choice
[13039.814371] usb 3-1: config 0 descriptor??
[13039.821299] usb 3-1: New USB device found, idVendor=18ec,
idProduct=3118
[13039.821306] usb 3-1: New USB device strings: Mfr=1, Product=3,
SerialNumber=0
[13039.821309] usb 3-1: Product: USB TO IRDA 
[13039.821313] usb 3-1: Manufacturer: ARKMICRO

And after modprobe ark3116

[14005.884852] usbserial: USB Serial support registered for ark3116
[14005.884852] usbcore: registered new interface driver ark3116

Anyone know what I should do?

Thanks,
Markos

PS- output of lsusb -v

Bus 003 Device 004: ID 18ec:3118 Arkmicro Technologies Inc. USB to IrDA
adapter [ARK3116T]
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x18ec Arkmicro Technologies Inc.
  idProduct          0x3118 USB to IrDA adapter [ARK3116T]
  bcdDevice            0.01
  iManufacturer           1 ARKMICRO     
  iProduct                3 USB TO IRDA 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           39
    bNumInterfaces          1
    bConfigurationValue     0
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0004  1x 4 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
Device Status:     0x0000
  (Bus Powered)