I was googling for the SutonnyMJBold and found no where
except in somewherein. Thanks a lot to both somewherein
and Mr. Nafis for this help. I consider this blog to be a true
promoter bengali.

Like mr. Nafis me to would like to provide the url for
downloading the font. hope this won't violate the rules and
regulations of this blog.
There it is: http://www.mediafire.com/?j0yhgwzdzjk

I think i will now practice writing in bengali! :-)