Okay here we go. I have purchased Asus A7N8X mobo 2 sticks azenram 512 pc2700 ddr athlon 2400xp- got a deal on it. May return for a 2700 lian li pc65u case All other components will be reused from the system below Now the questions 1 - Do I have to reformat - 40 gig has xp pro on it; 120 is for files, video(80mb) 2- What sort of grief am I going to get from M$ wpa. XP pro is licensed copy but I am forever swapping pci and video cards 3- Any words of wisdom thanks!!!