Nas209 And Smargo (Usb Serial Converter)

Hello, i don't speak french, so i write in English (...if is not a problem for you..)

I have a Synology NAS209 with ARM CPU and i'm trying to install this Smargo dongle in it but i have an error; This is what i have done:

First of all i have installed ipkg management with success with this repository for my NAS ARM CPU: http://ipkg.nslu2-li...p_1.2-7_arm.xsh

Than i have tried to manage the Smargo dongle with this kernel modules and libusb

kernel-module-ftdi-sio_2.6.24-1_arm.ipk

kernel-module-usbserial_2.6.24-1_arm.ipk

libusb_0.1.12-1_arm.ipk

BUT FROM NOW WHEN I TRY TO INSTALL kernel-module-usbserial_2.6.24-1_arm.ipk OR kernel-module-ftdi-sio_2.6.24-1_arm.ipk I RECEIVE THIS ERROR:

NOTHING TO BE DONE

AN ERROR OCCURRED, RETURN VALUE:1.

COLLECTED ERRORS:

ERRORS: CANNOT SATISFY THE FOLLOWING DEPENDANCIES FOR KERNEL-MODULE-USBSERIAL:KERNEL-MODULE-USBCORE

Any idea on how to resolve this?

Thanks in advance!

My NAs has the firmware DSM 2.2-0959

P.S. I think the problem is the two kernel module isn't good for the kernel that i have..... so, are there anyone who has the Correct kernel modules that i need, or there is any chanche of recompile theme by myself (....i'm linux newbie)?