diff --git a/mozilla/intl/uconv/public/nsICharsetAlias.h b/mozilla/intl/uconv/public/nsICharsetAlias.h
index 5ee54de2761..9ad44962cf2 100644
--- a/mozilla/intl/uconv/public/nsICharsetAlias.h
+++ b/mozilla/intl/uconv/public/nsICharsetAlias.h
@@ -32,6 +32,7 @@ NS_DECLARE_ID(kICharsetAliasIID,\
 NS_DECLARE_ID(kCharsetAliasCID,\
  0x98d41c21, 0xccf3, 0x11d2, 0xb3, 0xb1, 0x0, 0x80, 0x5f, 0x8a, 0x66, 0x70 );
 
+#define NS_CHARSETALIAS_PROGID "component://netscape/intl/charsetalias"
 
 class nsICharsetAlias : public nsISupports
 {
diff --git a/mozilla/intl/uconv/public/nsICharsetConverterManager.h b/mozilla/intl/uconv/public/nsICharsetConverterManager.h
index 7d9e20b95ad..d014a1bc055 100644
--- a/mozilla/intl/uconv/public/nsICharsetConverterManager.h
+++ b/mozilla/intl/uconv/public/nsICharsetConverterManager.h
@@ -36,6 +36,8 @@ NS_DECLARE_ID(kICharsetConverterManagerIID,
 NS_DECLARE_ID(kCharsetConverterManagerCID, 
   0x1e3f79f1, 0x6b6b, 0x11d2, 0x8a, 0x86, 0x0, 0x60, 0x8, 0x11, 0xa8, 0x36);
 
+#define NS_CHARSETCONVERTERMANAGER_PROGID "componment://netscape/intl/charsetconvertermanager"
+
 #define NS_ERROR_UCONV_NOCONV \
   NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_UCONV,1)
 
diff --git a/mozilla/intl/uconv/public/nsIPlatformCharset.h b/mozilla/intl/uconv/public/nsIPlatformCharset.h
index 43508b7be2e..ba2bf8085f5 100644
--- a/mozilla/intl/uconv/public/nsIPlatformCharset.h
+++ b/mozilla/intl/uconv/public/nsIPlatformCharset.h
@@ -35,6 +35,8 @@ NS_DECLARE_ID(kIPlatformCharsetIID,
 NS_DECLARE_ID(kPlatformCharsetCID,  
  0x84b0f182, 0xc6c7, 0x11d2, 0xb3, 0xb0, 0x0, 0x80, 0x5f, 0x8a, 0x66, 0x70 );
 
+#define NS_PLATFORMCHARSET_PROGID "component://netscape/intl/platformcharset"
+
 typedef enum {
      kPlatformCharsetSel_PlainTextInClipboard = 0,
      kPlatformCharsetSel_FileName = 1,
diff --git a/mozilla/intl/uconv/public/nsIUnicodeDecoder.h b/mozilla/intl/uconv/public/nsIUnicodeDecoder.h
index 80ddd02c317..e82bd966fa1 100644
--- a/mozilla/intl/uconv/public/nsIUnicodeDecoder.h
+++ b/mozilla/intl/uconv/public/nsIUnicodeDecoder.h
@@ -56,6 +56,9 @@ NS_DECLARE_ID(kIUnicodeDecoderIID,
 #define NS_ERROR_UDEC_ILLEGALINPUT  \
   NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_UCONV, 14)
 
+
+#define NS_UNICODEDECODER_PROGID_BASE "component://netscape/intl/unicode/decoder?charset="
+
 /**
  * Interface for a Converter from a Charset into Unicode.
  *
diff --git a/mozilla/intl/uconv/public/nsIUnicodeEncoder.h b/mozilla/intl/uconv/public/nsIUnicodeEncoder.h
index 2f86e0e90e9..650d921df93 100644
--- a/mozilla/intl/uconv/public/nsIUnicodeEncoder.h
+++ b/mozilla/intl/uconv/public/nsIUnicodeEncoder.h
@@ -43,6 +43,9 @@ NS_DECLARE_ID(kIUnicharEncoderIID,
 #define NS_ERROR_UENC_NOMAPPING     \
   NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_UCONV, 0x23)
 
+
+#define NS_UNICODEENCODER_PROGID_BASE "component://netscape/intl/unicode/encoder?charset="
+
 /**
  * Interface which converts a single character from Unicode into a given 
  * charset.