This is what I ordered.Remember im computer dumb so don't laugh. XPS 210 Intel® Core™2 Duo Processor E6300 (2MB L2 Cache,1.86GHz,1066 FSB), Genuine Windows Vista™ Home Premium
nwn seems to run better in linux than in win xp. (for me anyway)and it never asks me to insert the game disk which is also nice.if you are looking to complicate your life, you could always install linux on a virtual machine and run nwn on linux in a vm on vista O.o