Hi Ramesh
You will get a better assistance if you explain what sort of Business Analyst work you are doing? Are you in a specific business area/process area? Finally, more information on how long you have been in this area and what other interest do you have in SAP?
In relation to spending more time in the MS products for your job welcome to my world! I do security work and I can find myself out of SAP and using other products to help me. Don't discount mastering those products as you would be surprised how many consultants and SAP "experts" don't know how to effectively use support tools to do their job!
Regards
Colleen