Dear Smt Deepa,
I read your post just now. If you have not recd any pointers then you may please check this:
BHAGAVAD GUNA DARPANA — Part II: Commentary on Sri Vishnu Sahasranama by Sri Parasarabhatta (original in Sanskrit — translation in English); Published by Sri Vishnu Sahasranama Sathsangam, C-8519, Vasant Kunj, New Delhi-110070. Price not mentioned.
adiyEn,
Sri Vaishnava Paadha Dhooli
Sudha