Notes on the istream problem with VS2003, VS2005, VS2008 C++ here.
Parsing comand line arguments and configuration files. Emacs syntax highlighting for GetPot files (getpot-mode). Easy to install ! The whole library is contained in one single header file. Easy to use ! Copy/paste all you need from example files. Distributed under GNU LPGL (non-military usage only!).
Disclaimer: The name 'GetPot' was chosen with pottery in mind, rather than less innocent consumer goods.