Vista doesnt matter... 255.255.255.0 should be the same on most computers for the subnet masks... As for the IP address... just choose one that isnt in use... In my house I have it set up so 2XX (xx is number from 00 - 99 depending on when I put the computer in) is Wireless and 1XX (same applies for xx) is wired. That is for last number... I recommend something like... 192.168.1.100 or something... just make sure it isnt in use by another computer in the household.