regarding free shipping

If the shipping city is "Moscow" free shipping is available( for any other cities shipping charge will be there )  .

Can this be set from the admin module for nopcommerce 2.65

What shipping rate computation method are you using?
For example, if you are using Shipping By Weight, then you can create a country specific record with defaults and just change the country. (default is $0 for 'any' weight)

sorry bro but i dont know the math.Just that if its Moscow its free..

You need a shipping rate computation method. check out:

http://admin-demo.nopcommerce.com/Admin/Shipping/Providers

Look at "Shipping by weight"

I use fixed rate shipping computation

what i plan in selling are sunglasses... s if the person buys from Moscow then no shipping charge ..and if from elsewhere in Russia there is chareg