Could not connect ethernet through Techcom usb to ethrnet to my BB -c4

Hi all,

I am using anstrom distribution on my BB-C4 with ethernet connected to
it over techcom ethrnet to usb.
I gave following command:
ifdown eth0
ifup eth0

then i inserted g_ether.ko module

then too its not working...
pls help me

Iam trying this since 2 days couldnt find a solution,

pls help me ...