Hi, I have an MSI K7N2 Delta Mainboard, with an nForce 2 Chipset. The board has 3 DDR RAM slots. I am currently running two SINGLE SIDED 256MB DDR333 modules in dual channel mode. I want to upgrade to 1GB of RAM, but I want to keep dual channel mode, and, if possible, not replace my 2x256. So: my question is, if I put in a DOUBLE SIDED 512 MB module, and pair it with the 2x256MB SINGLE SIDED modules, will the whole setup run in dual channel? Thanks in advance for your help. Any links would be appreciated.