Try this with care. You can get a new look like S60 3rd edtion with N70, N72 ( Tested ). Here are files and save in C drive. After all saved in C drive then Restart..
Copy folders from archive to the root of C drive in ur phone. (copy the folders from the archive named System and Nokia) (This is because of profiles. Their configuration files are located in C.).
NOw you can have
S60 3rd acc tones S60 3rd 2 themes S60 3rd fonts S60 3rd serios Screensever A new look like S60 3rd With your N70, N72