Wirelessly posted (htc Vogue: Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; IEMobile 7.11) Sprint MP6950SP)
I suggest you go through all the steps in that thread I linked you to in your other thread again. Remember you have to have internet/data working first before mms. Also use the newest version of arcsoft mms.

!!!!EDIT!!!!
I think I found what you need over on howard forums. Here is a cab that is supposed to install all the correct settings for metro web&mms.
Try it and let me know if it works!
Here it is:
http://www.mediafire.com/?ojkwkym1gtw