I recently had a new Asus motherboard and 512mb ps3200 memory module fitted in my amd athlon by an installer. The cost was over £200. He asked if i would like another 512 module fitted for an extra £50,but i thought i had enough memory. I wish now that i had the board fitted because all the family use the computer and things are now running slow. My question is, is it easy to fit a module myself,would i need to purchase anything else, and when its plugged in will it fire up automatically or do i have to do change any settings . Also does the other module take over when the other one is full MY setup is windows xp. I would be gratefull for any advice.