wireless usb adapter for bsnl wireless router

[mrcool63]

i have a bsnl wireless modem.. i want to connect my primary desktop which is located in the other room.. kindly tell me a good n150 wireless usb adapter, preferably around 1k.. i will also be gaming on the computer so is it necessary to have a n300 adapter? kindly advice.. rather urgent.. budget is 1-1.5k