I own a Sony Vaio PCV-RX550 which uses the Asus P4B-LX mobo which is currently dead. I am trying to find a new mobo that I can use my current components with but I'm lost. the P4B-LX uses pc133 sdram. Can pc133 be used in mobos that support DDR266 or better? Any suggestions on a new mobo or will I have to buy a new one with new components i.e. ram to support it?