Thanks All...for your replies..
I was unable to resolve this from SSRS..took help from SQL.Since there is no other go and time was running away , i had to convince everyone to use Sql...
I added 2 columns to the dataset to get the sum...and called those columns in the textboxes.
Thanks to dbowlin and lutz for your replies..
With Regards,
Anu..;-):hehe: