error in npm install inspite of changing the file Bson

using mongodb3.0, node 0.12.0, npm 2.5.1 on windows 7 integrale, I am trying to read and write data into my database, but i have this error in npm intsall!

{ [Error: Cannot find module '../build/Release/bson'] code: 'MODULE_NOT_FOUND' }

js-bson: Failed to load c++ bson extension, using pure JS version
{ [Error: Cannot find module '../build/Release/bson'] code: 'MODULE_NOT_FOUND' }

js-bson: Failed to load c++ bson extension, using pure JS version

i tried to replace

bson = require('../build/Release/bson');

into

bson = require('../browser_build/bson');

but i had errors like this:

 exports.BSON.BSON_BINARY_SUBTYPE_DEFAULT = 0 TypeError: Cannot set property       'BSON_BINARY_SUBTYPE_DEFAULT' of undefined  

i am using monk, anfd i have run npm mongodb, npm monk