Hello
I have a MikroTik router model: "RB2011USA-2HnD-IN" which has built in wireless but i could not find the wireless setting option under the Webfig/Winbox interfaces option. Please kindly help.
What Lakis suggested would work, but easier would be to run Netinstall with the latest RouterOS version v6.10 (you have v6.1). It will fix any problems and upgrade software at the same time. http://wiki.mikrotik.com/wiki/Manual:Netinstall