Hey W,
Question, when you say "i want to upgrade from sdram to ddr ram", are you asking for a "Dual Ram" mobo? like the ECS K75SA(which has both sd & ddr slots) or are you for a pure DDR mobo? Also what is your time frame, do you need it right now?
My advice: if you are asking about a "Dual Ram" mobo, don't get one. Their performance sucks even with DDR. If you are asking about a DDR mobo for right now, MSI KT3 Ultra2(Via KT333), or if you hate Via, MSI K7N415 PRO(Nvidia nForce 415) or MSI 745 Ultra(SiS 745) if you want to save a little money. Good Luck
Peace Out...............tile
god knows your entire system setup & he would answer your questions if he could just stop laughing