Right, I'm giving my PC a small boost to get it up to scratch for Vista, I've just bought a new Seagate SATA HD, but I want to give my system an extra 1GB of RAM to bring it up to 2GB in total. Now I remember a while ago reading some nasty rumour that Nforce3 Ultra motherboards will only accept 4 sticks of RAM if it's not double-sided. Is this true? At present I have 2 512MB sticks of single-sided RAM running in dual channel. Will I need to make sure that the next 2 sticks are single-sided also, and if so where can I buy them from that will guarantee them to be single-sided? The last time I had to do this I think I had to order over the phone from Crucial actually. Reps for any help given PS Also, why does my sig not show up properly in IE7?