Alhamdulillah,
the Bangla (Bengali) translation of the Holy Qur'an by Dr.
Zohurul Hoque is now available in pdf format for
you to read in the web, download to your computer, or to
print. For viewing, you will require Adobe Acrobat Reader software.
This can be downloaded free of cost at Adobe's site
by clicking the button below.

Dr.
Zohurul Hoque is the only person
who has translated the Holy Qur'an into three languages:
Assamese, Bangla and English. The first editions of Assamese
and Bangla translations are out of print. Now, the second
edition of Bangla translation is available on the web.
Assamese translation is partially available on
the web. A printed version of the Assamaese translation is now available.

http://www.islam101.com/tauheed/AllahWE.htm
http://www.answering-christianity.com/sami_zaatri/why_allah_says_we.htm
http://msmjeddah.com/pages/qaa2.asp (see question 12)