Everything looks good imo. but jsut a few things. Why XP? I would just go with vista home premium. Xp is a very good OS but it is getting a little long in the tooth, but if you do decide to go with vista i would recommend 4 gigs instead of 2. May want to check the compatability of that ram with your motherboard, i believe there is a list on gigabytes website. other than that everything looks good. Just be careful when you build, when you start to apply the arctic silver be sure to use only enough that stuff is very good as a thermal compound but it will conduct electricity, dont get it ony capacitors and what not.