i dont want to go ahead and start 'arping' some other companies network.....
everyonein my network has the same adpter (D-Link 530TX) but the adresses are different....howz that?
To whom does this network actually belong? if it really IS YOURS, how do you expect to inadvertently access the network of another company?

If this network does NOT belong to you, as I strongly suspect, DO not mess about on it with things you obviously don't understand.

If all the devices on a network had the same address, how would the system know where to send things?................sending all packets to everybody would hardly be efficient?............ that really would DoS your network?