Thanks for the info, this will help me a lot , with regards the ram chips , are you sure I can use 2x2meg as everyone and everthing is saying a max of 2x 512mb ? again, technology has moved on and new chips may allow this , but wanted to double check you first before splashing out on new ram If I can run it, would you mind giving me another link to refer What I have read is that if its a 64 bit (which it isnt ) it would use the ram , if its a 32 bit it will only use or recognise 1mg ? is this right , I notice a smaller slot on the board which takes another memory? module , what is that for ? its about half the size of the normal memory chip ? .... and sits right angle to te memory chip nearly under the hard-drive ? thanks again for the help given Paul