Accton EN5251 Network Adapter - how can I install?

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Hi everyone !
I managed to install linux with 2.6.10 kernel. During installation network card worked well, now, i login and get the message:

bringing eth0 up...
eth0: unknown interface: no such device



and with ifconfig eth0
eth0: error fetching interface informazion: Device not found.

how do I install the driver? I downloaded a linux driver, but i don't really know how to install it: it is a file called 2216sco.zip, I unzipped it and got a directory containing a scolsen.tar file. Unzipping this scolsen.tar i get a /usr/lib/custom path with a file lsen.rmv
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Nature proceeds by the shortest of means

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ummm it was late and I was tired
I awoke this morning and recognized I took the wrong setting in kernel config. My network adapter emulates realtek, but actually there are two realtek drivers in kernel config. Yesterday I just tried the wrong one

Now the problem is another

Eth0 has driver, but doesn't send packets:

#ifconfig eth0

eth0 Link encap:UNSPEC HWaddr 00-02-3F-22-13-00-23-AD-00-00-00-00-00-00-00-00
inet addr:192.168.1.9 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets: 0 errors: 0 dropped: 0 overruns:0 frame:0
TX pachets: 15 errors_0 dropped:0 overruns:0 carrier:0
collisions: 0 txqueuelen: 1000
RX bytes: 0 TX bytes: 540



#ping -c 3 192.168.1.1
From 192.168.1.9 icmp_seq=1 Destination Host Unreachable
...


#ping -c 3 192.168.1.9
64 bytes from 192.168.1.9 icmp_seq=1 ttl=64 time=0.135 ms
...


#mii-tool
SIOCGMIPHY on 'eth0' failed: Operation not supported
no MII interfaces found
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Nature proceeds by the shortest of means