graeme_p - 6:46 am on Mar 1, 2013 (gmt 0)
What are you running on Roseatta? Its a PowerPC emulator?
You could run an older version of MacOS in a VM. I run Windows on a Linux host that way occasionally to test a site in IE.
A quick Google found Unicode fonts and input methods for Windows, Mac and Linux for Bengali. Is there more to it than that?
How did you get interested in such a wide range of languages? Canadian aboriginal to Bengali is a long way. I had another look at your website in case it answered this, and the result was I am now confused about your name as well.