diff --git a/reactos/include/psdk/evntrace.h b/reactos/include/psdk/evntrace.h
index 20b6c9bcd6b..cb77c2eba16 100644
--- a/reactos/include/psdk/evntrace.h
+++ b/reactos/include/psdk/evntrace.h
@@ -56,12 +56,33 @@ typedef struct _EVENT_TRACE_HEADER *PEVENT_TRACE_HEADER;
 
 
 typedef ULONG64 TRACEHANDLE, *PTRACEHANDLE;
+typedef ULONG (WINAPI *WMIDPREQUEST)(
+    WMIDPREQUESTCODE RequestCode,
+    PVOID RequestContext,
+    ULONG *BufferSize,
+    PVOID Buffer
+);
+
+typedef struct _TRACE_GUID_REGISTRATION
+{
+    LPCGUID Guid;
+    HANDLE RegHandle;
+} TRACE_GUID_REGISTRATION, *PTRACE_GUID_REGISTRATION;
 
 
 ULONG WMIAPI TraceEvent(TRACEHANDLE,PEVENT_TRACE_HEADER);
 TRACEHANDLE WMIAPI GetTraceLoggerHandle(PVOID);
 ULONG WMIAPI GetTraceEnableFlags(TRACEHANDLE);
+UCHAR WMIAPI GetTraceEnableLevel(TRACEHANDLE);
+ULONG WMIAPI RegisterTraceGuidsA(WMIDPREQUEST,PVOID,LPCGUID,ULONG,PTRACE_GUID_REGISTRATION,LPCSTR,LPCSTR,PTRACEHANDLE);
+ULONG WMIAPI RegisterTraceGuidsW(WMIDPREQUEST,PVOID,LPCGUID,ULONG,PTRACE_GUID_REGISTRATION,LPCWSTR,LPCWSTR,PTRACEHANDLE);
+ULONG WMIAPI UnregisterTraceGuids(TRACEHANDLE);
 
+#if defined (UNICODE) || defined (_UNICODE)
+#define RegisterTraceGuids RegisterTraceGuidsW
+#else
+#define RegisterTraceGuids RegisterTraceGuidsA
+#endif
 
 #endif /* ENVTRACE_H */
 
diff --git a/reactos/include/psdk/wmistr.h b/reactos/include/psdk/wmistr.h
new file mode 100644
index 00000000000..3d808260178
--- /dev/null
+++ b/reactos/include/psdk/wmistr.h
@@ -0,0 +1,18 @@
+#ifndef _WMISTR_
+#define _WMISTR_
+ 
+typedef enum
+{
+    WMI_GET_ALL_DATA = 0,
+    WMI_GET_SINGLE_INSTANCE,
+    WMI_SET_SINGLE_INSTANCE,
+    WMI_SET_SINGLE_ITEM,
+    WMI_ENABLE_EVENTS,
+    WMI_DISABLE_EVENTS,
+    WMI_ENABLE_COLLECTION,
+    WMI_DISABLE_COLLECTION,
+    WMI_REGINFO,
+    WMI_EXECUTE_METHOD
+} WMIDPREQUESTCODE;
+
+#endif /* _WMISTR_ */