thery, thery, thery,
I just hope you're not plaing some kind of silly game with me :D
This topic takes too long, and still problem isn't solved.
It looks there is no way to make this work using methods described so far, so I decided to create an fully working Visual studio solution with project and property sheets for you.
I uploaded them on the internet so you can download it and use it.
http://uploading.com/files/49a89683/Boost.rar/
Once you extract downloaded Boost.rar, inside the extracted file you'll find a visual studio solution, a project and 4 different property sheets.
(I'm not sure if you'll be able to open that solution since I create it in visual studio 11)
Anyway you can use the property sheets located inside the folder in any project you crate in your visual studio edition.
I included a path which corespond to your boost path wich is as you told me
c:\boost_1_49_0\boost_1_49_0
So you don't have edit anything here.
Please note, inside the extracted boost\boost folder You will find Boost.cpp file.
That is a source file which will show you how to properly include an boost header, it will also show you how to create a boost thread.
When you compile that source an run it in your project it will display you an informational message that your boost library now fully works.
Property sheets included as allready told are of 4 different kidns and their names are self explanatory, here thy are:
Boost.Debug.Dynamic.props is used to build boost in debug mode dynamicaly
Boost.Debug.Static.props is used to build boost in debug mode staticaly
Other two are the same but you will use them to build released projects.
Boost.Release.Dynamic.props
Boost.Release.Static.props
I'm pretty sure you can't miss the door at this point since you now have everything you need :D