--- wine/dlls/ntdll/nt.c	2005-02-12 08:18:02.000000000 +0100
+++ mywine/dlls/ntdll/nt.c	2005-02-20 15:05:24.000000000 +0100
@@ -521,8 +521,11 @@ NTSTATUS WINAPI NtQueryPerformanceCounte
 {
     LARGE_INTEGER time;
     NtQuerySystemTime( &time );
-    Counter->QuadPart = time.QuadPart;
-    Frequency->QuadPart = 10000000;
+    /* convert a counter that increments 10 counts at a rate 1 MHz
+     * to one of 1193182 Hz, with some care for arithmetic overflows
+     * (will occur after approx. 200 days */
+    Counter->QuadPart = ((time.QuadPart / 10) * 596591 ) / 500000 ;
+    Frequency->QuadPart = 1193182;
     return 0;
 }