Sony Ericsson :: C903 - How To Separate SMS And MMS Like Old Style?

I never used foreign phone when I was in Korea, even I never used Motorola. Recently I bought Sony C903 and it was my first foreign, Sony phone and I like this so much. It was Australian centus(?) branded one so I debranded it. I found information how to debrand from here and there and mostly esato.com here

Now I am having fun modifying my phone so I changed my acoustic setting (thanks to hiro) and changed font. So now I can see my Korean MP3 and Video files. While I was seeking information for those, I slightly saw there was the way to separate SMS and MMS now its all mixed in same category and no way to sort MMS only. I remember, it was way to change some text on some file. I remember he said, it is going to back to old style of SMS, MMS view.