Bengali
If this isn't the word Bengali: বাংলা, in Bengali, then you may not be able to display Bengali on your computer, or you may not have a Bengali Unicode font installed.
At the current time it is not straightforward to display Bengali on your computer. The first update of Windows which can correctly display Bengali will be Windows XP Service Pack 2.
Even if your computer is able to display Bengali, you will need a Bengali OpenType font.
Bengali OpenType font
To install a Bengali font from The Free Bangla Fonts Project, please download the following file:
If you don't have a utility available to uncompress .zip files then one you can download UltimateZip for free.
Alternatively you can download this self-extracting zip version:
Once you have uncompressed the font file you can install using the font utility in the Control Panel, alternatively just copy the .ttf files into your \windows\fonts\ directory. There are more detailed instructions on our installing fonts page.
Linux
If you are running a new Linux distribution then the best option is to get the font direct from the The Free Bangla Fonts Project or from the Bengali Linux site (debs and RPMs are available in addition to the source code) and a new version of Mozilla (an Xft build).
Mac OS X
Bengali is not supported out-of-the-box in Mac OS X v10.2.4. Installing the Bengali fonts from the Free Bangla Fonts Project provides basic support, but problems have been reported using Internet Explorer v5.2.2. Try using Apple's KDE-based browser Safari.