everytime i start my pc now, ZA is telling me that there is a network connection present and asks me permision if i want to allow it it access to the internet, i have been saying 'no' beacause it's only recently started doing it i've no idea what it is as this is just a single pc...

the other computer has exactly the same ip as me except for the last bit, it also has the exact same subnet mask?,i'm not really sure what these things are but there is probably a logical explanation for this, could anyone guess at why it's doing this?