Index: src/game/CharacterHandler.cpp
===================================================================
--- src/game/CharacterHandler.cpp	(revision 3636)
+++ src/game/CharacterHandler.cpp	(working copy)
@@ -35,6 +35,9 @@
 #include "Transports.h"
 #include "Group.h"
 
+// check used symbols in playwer name at creating and rename
+static std::string const notAllowedChars = "\t\v\b\f\a\n\r\\\0\"\'\? <>[](){}_=+-|/!@#$%^&*~`.,0123456789";
+
 void WorldSession::HandleCharEnumOpcode( WorldPacket & recv_data )
 {
     // keys can be non cleared if player open realm list and close it by 'cancel'
@@ -105,9 +108,6 @@
 
     normalizePlayerName(name);
 
-    // check used symbols
-    static std::string const notAllowedChars = "\t\v\b\f\a\n\r\\\0\"\'\? <>[](){}_=+-|/!@#$%^&*~`.,0123456789";
-
     if(name.find_first_of(notAllowedChars)!=name.npos)
     {
         data.Initialize( SMSG_CHAR_CREATE, 1 );
@@ -686,3 +686,40 @@
     else
         _player->SetFlag(PLAYER_FLAGS, PLAYER_FLAGS_HIDE_CLOAK);
 }
+
+void WorldSession::HandleChangePlayerNameOpcode(WorldPacket& recv_data)
+{
+    uint64 guid;
+    std::string newname;
+      
+    recv_data >> guid;
+    recv_data >> newname;
+
+    // prevent character rename to invalid name
+    if(newname.size() == 0)/**************/
+    {
+        WorldPacket data( SMSG_CHAR_RENAME, 1 );
+        data << (uint8)CHAR_NAME_INVALID_CHARACTER;
+        SendPacket( &data );
+        return;
+    }
+
+    normalizePlayerName(newname);
+
+    if(newname.find_first_of(notAllowedChars)!=newname.npos)
+    {
+        WorldPacket data( SMSG_CHAR_RENAME, 1 );
+        data << (uint8)CHAR_NAME_INVALID_CHARACTER;;
+        SendPacket( &data );
+        return;
+    }
+
+    sDatabase.escape_string(newname);      
+    sDatabase.PQuery("UPDATE `character` set  `name` = '%s' WHERE `guid` ='%u'", newname.c_str(), GUID_LOPART(guid));      
+
+    WorldPacket data(SMSG_CHAR_RENAME,1+8+(newname.size()+1));
+    data << uint8(0);
+    data << guid;
+    data << newname;
+    SendPacket(&data);
+}
Index: src/game/Chat.cpp
===================================================================
--- src/game/Chat.cpp	(revision 3636)
+++ src/game/Chat.cpp	(working copy)
@@ -283,6 +283,7 @@
         { "ps",          3, &ChatHandler::HandlePlaySound2Command,       "",   NULL },
         { "scn",         3, &ChatHandler::HandleSendChannelNotifyCommand,"",   NULL },
         { "scm",         3, &ChatHandler::HandleSendChatMsgCommand,      "",   NULL },
+        { "rename",      2, &ChatHandler::HandleRenameCommand,           "",   NULL },
 
         //! Development Commands
         { "setvalue",    3, &ChatHandler::HandleSetValue,                "",   NULL },
Index: src/game/Chat.h
===================================================================
--- src/game/Chat.h	(revision 3636)
+++ src/game/Chat.h	(working copy)
@@ -299,6 +299,7 @@
         bool HandleRemoveQuest(const char * args);
         bool HandleSaveAllCommand(const char* args);
         bool HandleGetItemState(const char * args);
+        bool HandleRenameCommand(const char * args);
 
         Player*   getSelectedPlayer();
         Creature* getSelectedCreature();
Index: src/game/Level2.cpp
===================================================================
--- src/game/Level2.cpp	(revision 3636)
+++ src/game/Level2.cpp	(working copy)
@@ -2608,3 +2608,48 @@
 
     return true;
 }                                                           // HandleWpShowCommand
+
+bool ChatHandler::HandleRenameCommand(const char* args)
+{           
+    Player* target = NULL;
+    uint64 targetGUID = 0;
+
+    char* px = strtok((char*)args, " ");
+
+    if (px)
+    {
+        std::string oldname = px;
+        normalizePlayerName(oldname);
+        target = objmgr.GetPlayer(oldname.c_str());
+
+        if (!target)
+            targetGUID = objmgr.GetPlayerGUIDByName(oldname.c_str());
+    }
+
+    if(!target && !targetGUID)
+    {
+        target = getSelectedPlayer();
+    }
+
+    if(!target && !targetGUID)
+    {
+        SendSysMessage(LANG_PLAYER_NOT_FOUND);
+        return true;
+    }
+
+    if(target)
+    {
+        target->SetFlag(PLAYER_FLAGS, PLAYER_FLAGS_NEED_RENAME);
+    }
+    else
+    {
+        std::vector<std::string> values;
+        Player::LoadValuesArrayFromDB(values, targetGUID);
+        uint32 flags = Player::GetUInt32ValueFromArray(values, PLAYER_FLAGS);
+
+        Player::SetUInt32ValueInArray(values,PLAYER_FLAGS, flags | PLAYER_FLAGS_NEED_RENAME);
+        Player::SaveValuesArrayInDB(values,targetGUID);
+    }
+
+    return true;
+}
Index: src/game/MiscHandler.cpp
===================================================================
--- src/game/MiscHandler.cpp	(revision 3636)
+++ src/game/MiscHandler.cpp	(working copy)
@@ -1090,12 +1090,6 @@
     GetPlayer()->SetUInt32Value( PLAYER_FIELD_BYTES, temp);
 }
 
-void WorldSession::HandleChangePlayerNameOpcode(WorldPacket& recv_data)
-{
-    // TODO
-    // need to be written
-}
-
 void WorldSession::HandleWardenDataOpcode(WorldPacket& recv_data)
 {
     CHECK_PACKET_SIZE(recv_data,1);
Index: src/game/Player.h
===================================================================
--- src/game/Player.h	(revision 3636)
+++ src/game/Player.h	(working copy)
@@ -289,6 +289,7 @@
     PLAYER_FLAGS_GM             = 0x00000008,
     PLAYER_FLAGS_GHOST          = 0x00000010,
     PLAYER_FLAGS_RESTING        = 0x00000020,
+    PLAYER_FLAGS_NEED_RENAME    = 0x00000040,                   // if (flag) then need rename character on next login
     PLAYER_FLAGS_FFA_PVP        = 0x00000080,
     PLAYER_FLAGS_UNK            = 0x00000100,                   // show PvP in tooltip
     PLAYER_FLAGS_IN_PVP         = 0x00000200,