After much R&D on the topic and aided by valuable inputs from my friends, here I present the final complete solution for seamless reading and writing in Bangla font on PCs running Windows XP.
1. Writing in Bangla font (also applicable for Windows Vista/7):
Use Avro keyboard. It's free and it's totally awesome. Download link: http://www.omicronlab.com/download/setup_avrokeyboard_4.5.1.exe
2. Reading Bangla font: There are two ways to configure XP for Bangla.
(a) Using XP CD: http://www.omicronlab.com/docs/configuring-windows-xp-for-bangla.html
(b) Without XP CD (recommended): Using iComplex . Download link: http://omicronlab.com/download/tools/iComplex_2.0.0.exe
3. Solution for small Bangla font problem: Download Modified Vrinda font from http://null.dev.tripod.com/misc_files/Vrinda.ttf (right click, save link as)
Replace ur original Vrinda font which already exists in C:/WINDOWS/fonts/.Details at: http://bn.wiktionary.org/wiki/%E0%A6%89%E0%A6%87%E0%A6%95%E0%A6%BF%E0%A6%85%E0%A6%AD%E0%A6%BF%E0%A6%A7%E0%A6%BE%E0%A6%A8:Bangla_script_display_and_input_help#Solution_for_the_small_fonts_problem (acknowledgments: Abhishek Bhowmick, Soumyajit Sarkar and myself among others... :) )
