Hello Everyone, I needed a regular expression library, and having discovered Boost through google, I downloaded and installed it. I've set the environment for the include files by Tools > Options > Projects > VC++ Directories > Include Files. And I have set it to include a particular library file but the path goes something like this: "$(VCInstallDir)boost\bin\boost\libs\regex\build\libboost_regex.lib\vc-7_1\debug\runtime-link-static" I have a feeling something is wrong here. Is there a way to set the environment for the library files in one go without having to include another path each time I need some library file that isn't in my list of included paths? For example, if I needed a library file from "signals", I guess I would have to locate the appropriate file and then just enlist another path like "$(VCInstallDir)boost\bin\boost\libs\signals\build\..." Thanks.