error

ant -f "C:\\Documents and Settings\\bjh\\My Documents\\NetBeansProjects\\MoppyDesk" -Dnb.internal.action.name=run run
init:
Deleting: C:\Documents and Settings\bjh\My Documents\NetBeansProjects\MoppyDesk\build\built-jar.properties
deps-jar:
Updating property file: C:\Documents and Settings\bjh\My Documents\NetBeansProjects\MoppyDesk\build\built-jar.properties
compile:
run:
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path thrown while loading gnu.io.RXTXCommDriverException in thread "AWT-EventQueue-0" java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
	at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1886)
	at java.lang.Runtime.loadLibrary0(Runtime.java:849)
	at java.lang.System.loadLibrary(System.java:1088)
	at java.lang.Runtime.loadLibrary0(Runtime.java:849)	at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:123)
	at moppydesk.MoppyMainWindow.updateComSelectionMenu(MoppyMainWindow.java:55)
	at moppydesk.MoppyMainWindow.<init>(MoppyMainWindow.java:43)
	at moppydesk.MoppyUI.startup(MoppyUI.java:19)
	at org.jdesktop.application.Application$1.run(Application.java:171)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:312)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
	at java.awt.EventQueue.access$200(EventQueue.java:103)
	at java.awt.EventQueue$3.run(EventQueue.java:694)
	at java.awt.EventQueue$3.run(EventQueue.java:692)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.awt.EventQueue$3.run(EventQueue.java:694)	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)BUILD STOPPED (total time: 944 minutes 26 seconds)