Thanks CrossRoads for the very quick answer.
I was searching the arduino UNO and I found two options:
1.- Arduino Compatible UNO ATMEGA328P-PU USB Board
2.- Arduino UNO R3 Microcontroller Development Board with USB Cable
are both the same?, because the price is very different.
The ethernet shield is great :).
Is there some arduino with a flash memory integrated to the board?, because I would like not use SD.
And for last, It's possible to use the USB to get the data stored into the flash memory with a pendrive?
Thanks for the previous answer and for your time.
I love this forum and arduino too,
Cheers,
Akuthor