_bstr_t casting, passing param

[Sneeden]

Can someone please explain to me.... I'm having a ***** of a time... sure it's something totally lame.

First things first, I can't create a _bstr_t and initialize it:

//throws compiler error
//id3 error LNK2019: unresolved external symbol "void __stdcall 
//_com_issue_error(long)" (?_com_issue_error@@YGXJ@Z) referenced in 
//function "public: __thiscall _bstr_t::_bstr_t(unsigned short const *)" 
//(??0_bstr_t@@QAE@PBG@Z)
_bstr_t bstrTest = "c:\\test.mp3";

next... can't get it work with cout

cout << bstrTest;

Third, can't seem to pass _bstr_t as a parameter

//proto
BOOL fileExists(_bstr_t bstrFileName);

//call
if(id3.fileExists(_bstr_t(L"")))
	{
		//cout << "file c:\\test.mp3 exists\n";
	}

What am I doing wrong?
I have the correct h files included I am sure:
#include <iostream>
#include <tchar.h>
#include <comutil.h>
#include <atlbase.h>
#include <atlcom.h>

pleh!

[CornedBee]

You're not linking against the correct lib files. I don't know which you need, though. Look it up in the docs.