diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index a37bcc3..be6078e 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -17,6 +17,7 @@ set(SOURCES
 	ir.h
 	nunchuk.h
 	os.h
+	util.c
 	wiiuse_internal.h
 	wiiboard.h)
 set(API
diff --git a/src/util.c b/src/util.c
new file mode 100644
index 0000000..8198e4c
--- /dev/null
+++ b/src/util.c
@@ -0,0 +1,49 @@
+/*
+ *	wiiuse
+ *
+ *  Copyright 2011 Iowa State University Virtual Reality Applications Center
+ *
+ *	This file is part of wiiuse.
+ *
+ *	This program is free software; you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation; either version 3 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *	$Header$
+ *
+ */
+
+/**
+ *	@file
+ *	@brief Provides platform-specific utility functions.
+ */
+
+
+#include "wiiuse_internal.h"
+
+#ifdef WIIUSE_WIN32
+
+#include <windows.h>
+
+void wiiuse_millisleep(int durationMilliseconds) {
+	Sleep(durationMilliseconds);
+}
+
+#else /* not win32 - assuming posix */
+
+#include <unistd.h>                     // for usleep
+
+void wiiuse_millisleep(int durationMilliseconds) {
+	usleep(durationMilliseconds * 1000);
+}
+
+#endif /* ifdef WIIUSE_WIN32 */
diff --git a/src/wiiuse_internal.h b/src/wiiuse_internal.h
index 7f674ee..142de9a 100644
--- a/src/wiiuse_internal.h
+++ b/src/wiiuse_internal.h
@@ -248,6 +248,15 @@ extern "C" {
 #endif
 
 /* not part of the api */
+
+/** @brief Cross-platform call to sleep for at least the specified number
+ * of milliseconds.
+ *
+ * Use instead of Sleep(), usleep(), or similar functions.
+ * Defined in util.c
+ */
+void wiiuse_millisleep(int durationMilliseconds);
+
 int wiiuse_set_report_type(struct wiimote_t* wm);
 void wiiuse_send_next_pending_read_request(struct wiimote_t* wm);
 int wiiuse_send(struct wiimote_t* wm, byte report_type, byte* msg, int len);