i haven't setup static ips for my ps3, computer, or xbox 360. the router seemed to give them some on its own, and things have been running a lot smoother since doing this. all three have different a different ip and mac address, so we're good there. i'm not really sure how it works, but i was playing with it and everything seems to work better than before. my understanding is that the router makes sure those ips get used by ONLY the items listed...so if i turn my computer off and then back on, it will still have everything the same.(same for ps3 and xbox 360) they all have domain names set...
i've been able to forward ports on XP, and to the ps3.(no problems)
i just wouldn't know the first thing about setting a static ip up and portforwarding.com is a bit confusing for me