Hi i just setup a home server— OS is Microsoft Windows Server 2000 and i need to get an antivirus on it i currently use Microsoft Security Essentials Because its one of the best antivirus software out there that i have found but is also free. I tried to install security essentails on it but it says not a vaild win 32 program how can i get around that or is there another antivuris software that is free but aslo good to use on a windows server 2000