static extern bool GetPhysicallyInstalledSystemMemory(out long MemoryInKilobytes);

Declare Function GetPhysicallyInstalledSystemMemory Lib "kernel32.dll" (TODO) As Boolean

    static extern bool GetPhysicallyInstalledSystemMemory(out long TotalMemoryInKilobytes);

    GetPhysicallyInstalledSystemMemory(out l);