Added SYSMETRICS_Set.
Implemented SPI_SETSHOWSOUNDS action.

diff --git a/include/sysmetrics.h b/include/sysmetrics.h
index ad922d4..d582b3f 100644
--- a/include/sysmetrics.h
+++ b/include/sysmetrics.h
@@ -8,6 +8,7 @@
 #define __WINE_SYSMETRICS_H
 
 extern void SYSMETRICS_Init(void);  /* sysmetrics.c */
+extern INT SYSMETRICS_Set( INT index, INT value );  /* sysmetrics.c */
 extern void SYSCOLOR_Init(void);  /* syscolor.c */
 
 /* Wine extensions */