HELP! Sony LCD Monitor Needs VESA Adapter Bracket

I have a Sony LCD monitor (SDM-M51D) and I am trying to mount it using
a VESA compatible wall bracket. The problem is I need some sort of
adapter to mount to the back of the monitor in order to make it accept
the VESA bracket. The bracket company acknowledges the existence of
this bracket and says that its free from Sony. After an hour on the
phone with Sony support AND the parts department, I'm no where.

Does anyone have a part # for this thing or have any advice for
tracking it down?