Could you provide some more detailed information about how you use this from C#? Could you also provide more details about what kind of error you see when trying to use the dll? If my COM-memory is not totally wrong, CoCreateInstance() cannot be called until the calling thread has called CoInitalize(). Could that be your problem? //daniel

Hi, Your compiler's first message is explanative: Jonnster wrote: I get the following: c:\program files\microsoft visual studio\vc98\include\algorithm(43) : error C2784: 'bool __cdecl std::operator ==(const class std::vector<_Ty,_A> &,const class std::vector<_Ty,_A> &)' : could not deduce template argument for 'const class std::vector Make it happy with: std::vectorstd::string::iterator it = std::find(vecStrings.begin(), vecStrings.end(), sMax); With C++0x (VS2010 or gcc 4.5) you can write: auto it = std::find(vs.begin(), vs.end(), sMax); which instructs the compiler to deduce the type of it. With previous compilers use typedef to get simpler code: typedef std::vectorstd::string VS; VS vs; // populate vs VS::iterator it = std::find(vs.begin(), vs.end(), sMax); cheers, AR C++0x wording edited When the wise (person) points at the moon the fool looks at the finger (Chinese proverb) modified on Friday, October 22, 2010 4:24 AM

FindFirstFile, FindNextFile, should do it quite easily. Just need to look at what you need to pass to it in terms of parameters. Or use CFileFind for straight MFC.