diff --git a/txw/compiler/src/main/java/com/sun/tools/txw2/Main.java b/txw/compiler/src/main/java/com/sun/tools/txw2/Main.java
index 3c8cc84..3f1a092 100644
--- a/txw/compiler/src/main/java/com/sun/tools/txw2/Main.java
+++ b/txw/compiler/src/main/java/com/sun/tools/txw2/Main.java
@@ -43,10 +43,10 @@ package com.sun.tools.txw2;
 import com.sun.codemodel.writer.FileCodeWriter;
 import com.sun.codemodel.writer.SingleStreamCodeWriter;
 import com.sun.tools.txw2.model.NodeSet;
+import org.kohsuke.args4j.Argument;
+import org.kohsuke.args4j.Option;
 import org.kohsuke.args4j.CmdLineException;
 import org.kohsuke.args4j.CmdLineParser;
-import org.kohsuke.args4j.opts.BooleanOption;
-import org.kohsuke.args4j.opts.StringOption;
 import org.kohsuke.rngom.parse.IllegalSchemaException;
 import org.kohsuke.rngom.parse.Parseable;
 import org.kohsuke.rngom.parse.compact.CompactParseable;
@@ -60,6 +60,8 @@ import java.io.File;
 import java.io.IOException;
 import java.net.MalformedURLException;
 import java.util.Properties;
+import java.util.List;
+import java.util.ArrayList;
 
 /**
  * Programatic entry point to the TXW compiler.
@@ -73,26 +75,39 @@ public class Main {
         this.opts = opts;
     }
 
-    public static void main(String[] args) {
-        System.exit(run(args));
+    public static class Options {
+        @Argument
+        public List<String> arguments = new ArrayList<String>();
+
+        @Option(name="-o")
+        public String output;
+
+        @Option(name="-p")
+        public String pkg;
+
+        @Option(name="-c")
+        public boolean compact;
+
+        @Option(name="-x")
+        public boolean xml;
+
+        @Option(name="-xsd")
+        public boolean xsd;
+
+        @Option(name="-h")
+        public boolean chain;
     }
 
-    public static class Options {
-        public StringOption output = new StringOption("-o");
-        public StringOption pkg = new StringOption("-p");
-        public BooleanOption compact = new BooleanOption("-c");
-        public BooleanOption xml = new BooleanOption("-x");
-        public BooleanOption xsd = new BooleanOption("-xsd");
-        public BooleanOption chain = new BooleanOption("-h");
+    public static void main(String[] args) {
+        System.exit(run(args));
     }
 
     public static int run(String[] args) {
         Options opts = new Options();
-        CmdLineParser parser = new CmdLineParser();
-        parser.addOptionClass(opts);
+        CmdLineParser parser = new CmdLineParser(opts);
 
         try {
-            parser.parse(args);
+            parser.parseArgument(args);
         } catch (CmdLineException e) {
             System.out.println(e.getMessage());
             printUsage();
@@ -102,9 +117,9 @@ public class Main {
         TxwOptions topts = new TxwOptions();
         topts.errorListener = new ConsoleErrorReporter(System.out);
 
-        if(opts.output.value!=null) {
+        if(opts.output != null) {
             try {
-                topts.codeWriter = new FileCodeWriter(new File(opts.output.value));
+                topts.codeWriter = new FileCodeWriter(new File(opts.output));
             } catch( IOException e ) {
                 System.out.println(e.getMessage());
                 printUsage();
@@ -114,12 +129,12 @@ public class Main {
             topts.codeWriter = new SingleStreamCodeWriter(System.out);
         }
 
-        if(opts.chain.isOn()) {
+        if(opts.chain) {
             topts.chainMethod = true;
         }
 
-        if(opts.pkg.value!=null) {
-            topts._package = topts.codeModel._package(opts.pkg.value);
+        if(opts.pkg != null) {
+            topts._package = topts.codeModel._package(opts.pkg);
         } else {
             topts._package = topts.codeModel.rootPackage();
         }
@@ -146,21 +161,21 @@ public class Main {
      * out of the specified schema file.
      */
     private static SchemaBuilder makeSourceSchema(CmdLineParser parser, Options opts, ErrorHandler eh) throws MalformedURLException {
-        File f = new File((String)parser.getArguments().get(0));
+        File f = new File(opts.arguments.get(0));
         final InputSource in = new InputSource(f.toURL().toExternalForm());
 
-        if(opts.xsd.isOff() && opts.xml.isOff() && opts.compact.isOff()) {
+        if(!opts.xsd && !opts.xml && !opts.compact) {
             // auto detect
             if(in.getSystemId().endsWith(".rnc"))
-                opts.compact.value=true;
+                opts.compact = true;
             else
             if(in.getSystemId().endsWith(".rng"))
-                opts.xml.value=true;
+                opts.xml = true;
             else
-                opts.xsd.value=true;
+                opts.xsd = true;
         }
 
-        if(opts.xsd.isOn())
+        if(opts.xsd)
             return new XmlSchemaLoader(in);
 
         final Parseable parseable = makeRELAXNGSource(opts, in, eh, f);
@@ -169,10 +184,10 @@ public class Main {
     }
 
     private static Parseable makeRELAXNGSource(Options opts, final InputSource in, ErrorHandler eh, File f) {
-        if(opts.compact.isOn())
+        if(opts.compact)
             return new CompactParseable(in,eh);
 
-        if(opts.xml.isOn())
+        if(opts.xml)
             return new SAXParseable(in,eh);
 
         // otherwise sniff from the file extension