arduino to ethernet two ip addresses (multiple computers)

Hi,

Trying to get two computers to read the same information from Arduino via ethernet. + switch.

One computer works on the IP address - that reads the data Arduino via ethernet

the other computer is in conflict.

Do I have to program Arduino with two IP addresses ? If so how ?

Thanks
Darren :o

the other computer is in conflict.

Smack it and order it to behave.

What the heck does "in conflict" mean? Some REAL details would be useful.