On March 30, 2013 I attempted to load.microsoft fsx deluxe on my Pentium 4, 3.4 Ghz, 512Mbytes Ram, and 32Ghz hard drive with Windows XP SP3. I kept getting fault Msxml4.0 missing compnents reload fsx. This issue caused much buyer remorse for me since Microsoft tech support considers it an obsolete program. They referred me to Microsoft community forum. You think there would be a solution for this but in my case frusration. I want to thank whoever posted this solution because this one actually worked for me and now Im up and flying. Thank you