Needed information urgent regarding revised individualreturn

Hai,

I have filed my income tax return basing on my form 16 for the AY 2011-12

in that i have only my salary income.

later now i have reliased that my frineds has done a commission businnes on my name

and used my PAN number. which resulted as, it is showing in my form 26AS  as TDS has been deducted 

for an amount of Rs.3200 under 194H.

Now can i revise my return and claim such TDS as refund.

if so, how i have to show such brokerage commission as income and upto what amount.

Please help me with the needed.