Problem to setup bijoy bangla software in Windows 7

Hi,
Yesterday i setup windows 7 in my pc, then i saw a problem. I can't setup bangla soft bijoy, but other setup other like avro work.
Without bijoy, i can't continue my work . So now ,i am very tensed.
Bijoy bangla software is necessary for me.Now what can i do?
Please give me a solution.
Thanks in advance.
