Index: src/main/java/org/apache/maven/archiver/MavenArchiver.java
===================================================================
--- src/main/java/org/apache/maven/archiver/MavenArchiver.java	(revision 1037536)
+++ src/main/java/org/apache/maven/archiver/MavenArchiver.java	(revision )
@@ -48,7 +48,7 @@
 
 /**
  * @author <a href="evenisse@apache.org">Emmanuel Venisse</a>
- * @version $Revision: 1037536 $ $Date: 2010-11-21 20:40:03 +0100 (So, 21 Nov 2010) $
+ * @version $Revision: 1037536 $ $Date: 2010-11-21 20:40:03 +0100 (Sun, 21 Nov 2010) $
  */
 public class MavenArchiver
 {
@@ -199,6 +199,7 @@
             
             List artifacts = project.getRuntimeClasspathElements();
             String classpathPrefix = config.getClasspathPrefix();
+            String classpathPrefixThirdParty = config.getClasspathPrefixThirdParty();
             String layoutType = config.getClasspathLayoutType();
             String layout = config.getCustomClasspathLayout();
             
@@ -215,8 +216,15 @@
                     {
                         classpath.append( " " );
                     }
+                    if (artifact != null && artifact.getGroupId().equals(project.getGroupId())){
-                    classpath.append( classpathPrefix );
+                        classpath.append( classpathPrefix );
-                    
+                    } else {
+                        if (classpathPrefixThirdParty.length()>0){
+                            classpath.append( classpathPrefixThirdParty );
+                        } else {
+                            classpath.append( classpathPrefix );
+                        }
+                    }
                     // NOTE: If the artifact or layout type (from config) is null, give up and use the file name by itself.
                     if ( artifact == null || layoutType == null )
                     {
Index: src/main/java/org/apache/maven/archiver/ManifestConfiguration.java
===================================================================
--- src/main/java/org/apache/maven/archiver/ManifestConfiguration.java	(revision 697981)
+++ src/main/java/org/apache/maven/archiver/ManifestConfiguration.java	(revision )
@@ -46,11 +46,17 @@
     private boolean addExtensions;
 
     /**
-     * This gets prefixed to all classpath entries.
+     * This gets prefixed to all classpath entries. Might be overriden by classpathPrefixThirdParty for third
+     * party libraries.
      */
     private String classpathPrefix = "";
 
     /**
+     * This gets prefixed to all third party classpath entries.
+     */
+    private String classpathPrefixThirdParty = "";
+
+    /**
      * Add default implementation entries if this is an extension specification.
      *
      * @since 2.1
@@ -153,6 +159,11 @@
         this.classpathPrefix = classpathPrefix;
     }
 
+    public void setClasspathPrefixThirdParty( String classpathPrefixThirdParty )
+    {
+        this.classpathPrefixThirdParty = classpathPrefixThirdParty;
+    }
+
     public void setMainClass( String mainClass )
     {
         this.mainClass = mainClass;
@@ -163,9 +174,8 @@
         this.packageName = packageName;
     }
 
-    public String getClasspathPrefix()
-    {
-        String cpp = classpathPrefix.replaceAll( "\\\\", "/" );
+    private String normalizeClasspathPrefix(String prefix){
+        String cpp = prefix.replaceAll( "\\\\", "/" );
 
         if ( cpp.length() != 0 && !cpp.endsWith( "/" ) )
         {
@@ -175,6 +185,16 @@
         return cpp;
     }
 
+    public String getClasspathPrefix()
+    {
+        return normalizeClasspathPrefix(classpathPrefix);
+    }
+
+    public String getClasspathPrefixThirdParty()
+    {
+        return normalizeClasspathPrefix(classpathPrefixThirdParty);
+    }
+
     /**
      * Return the type of layout to use when formatting classpath entries.
      * Default is taken from the constant CLASSPATH_LAYOUT_TYPE_SIMPLE, declared