diff --git a/lib/util/ktpclzip.inc.php b/lib/util/ktpclzip.inc.php
index b173109..9faf3e7 100644
--- a/lib/util/ktpclzip.inc.php
+++ b/lib/util/ktpclzip.inc.php
@@ -128,7 +128,9 @@ class KTPclZip {
 		$excludePath = $this->getExcludePath($sFolder, DIRECTORY_SEPARATOR);
 		
 		// Create the zip archive using the PclZip Wrapper
-		if ($this->_pclZip->create ( $sFolder , PCLZIP_OPT_REMOVE_PATH, $excludePath) == 0) {
+		if ($this->_pclZip->create ( $sFolder , 
+		    PCLZIP_OPT_REMOVE_PATH, $excludePath, 
+		    PCLZIP_CB_PRE_ADD, 'convertFilenameEncoding_Add') == 0) {
 			//( File_Archive::read ( $this->sTmpPath . '/Root Folder' ), File_Archive::toArchive ( $this->sZipFileName . '.' . $this->extension, File_Archive::toFiles ( $this->sTmpPath ), $this->extension ) );
 			return PEAR::raiseError ( _kt ( "Error compressing files" ) );
 		}
@@ -193,7 +195,8 @@ class KTPclZip {
 		}
 		*/		
 		
-		if ($this->_pclZip->extract ( PCLZIP_OPT_PATH, $this->sTmpPath ) == 0) {
+		if ($this->_pclZip->extract ( PCLZIP_OPT_PATH, $this->sTmpPath, 
+									  PCLZIP_CB_PRE_EXTRACT, 'convertFilenameEncoding_Extract' ) == 0) {
 			return PEAR::raiseError ( _kt ( "<font color='red'>Error : Unable to unzip archive</font>" ) );
 		}
 		
@@ -515,7 +518,19 @@ class KTPclZip {
 		return false;
 	}
 	*/
-	
-	
 }
+	
+function convertFilenameEncoding_Extract($p_event, &$p_header)
+{
+	$p_header['filename'] = iconv("CP437", "UTF-8", $p_header['filename']);
+	return 1;
+}
+
+function convertFilenameEncoding_Add($p_event, &$p_header)
+{
+	$p_header['stored_filename'] = iconv("UTF-8", "CP437", $p_header['stored_filename']);
+	return 1;
+
+}
+
 ?>