I was told by one tech at Dell that my PC had a 1GB motherboard and it came with 256mb of RAM installed. I added another 512mb of RAM to the second slot (thinking that I couldn't exceed 1GB). Anyway, I have since found out that my motherboard is actually capable of handling 2GB instead of 1 and I would like to 'max it out'. If I replace the 2 installed cards in the slots with 1GB cards each, how much information (if any) will I lose from my machine's memory? Will there be any repercussions in making a move like that?