These may be stupid questions but I'd like to know. When I replace my Wiis disc drive (sadly it seems I need to do that) it won't affect my system memory with all my game saves and everything will it? I backed them all up to a DVD anyway but it'll be a hassle to copy them back (assuming I can or would have to). And secondly, is it possible to upgrade the 512mb to something bigger? Say, 2gb?