Hi Satish
Not sure if you still require it. Any ways may be some one else can be beniffited..
Put all the NSE symbols(u can get it from NSE Bhav copy) in column A of an excel spread sheet. Use the formula TRIM(LEFT(A1,9)) & ".NS" for B1. You should have the yahoo symbol for the scrip. Copy and paste for the entire B column to get the complete yahoo symbol list. JDM's collection will help you get the IT group.
Best Regards
Coool.