>Hi Ed!
>>What exactly are you trying to determine? Packet count, bytes, collisions?
>Bytes!
>Simply, it is necessary to count the amount taken and sent byte through NIC.
>What can I do ?
>

You need packet analyser software for this. I'd suggest a commercial product. It's not trivial code. The number of bytes received is not the same as the amount of data read from a file.