Unknown IP address

[Guest Morris]

I have to communicate from my PC (Windows Vista) with a device that runs

 

Windows XP, has no

 

keybord and disply. Problem is that I don't know its ip address. I thout to

 

run WIreshark on my PC but I don't know whats the best ip address and mask

 

that I should set in my PC to asure that the sniffer would "see" the

 

packets.

 

Can someone advise please?

 

Regards

 

Morris