Head straight down to ICC (Indian Culture Center) located opposite Regency Pools, near the Mall round-about. And hand over what ever the staff out there requires, mostly, copy of ur passport, passport size (2 in nos.) photographs & you would have to fill in a form which is available there with them. You might have to pay a extra Qar 5/- for the service, but trust me, it much much better than standing the 'q' at the embassy.