WOW64

C# Signature:

[DllImport("kernel32.dll")]
private static extern bool Wow64SetThreadContext(IntPtr thread, int[] context);

VB Signature:

<DllImport("kernel32.dll", EntryPoint:="Wow64GetThreadContext"), SuppressUnmanagedCodeSecurity> _
    Private Shared Function Wow64GetThreadContext( _
    ByVal thread As IntPtr, _
    ByVal context As Integer()) As Boolean
    End Function