Open a file in binary mode

How do I open a file in binary mode in C++ (using Borland C++ Builder 5)?
What I need to do is to erase the ID3-tag of an mp3, and in VB you opened it in binary mode and wrote nothing to the 127 first bytes or something like that. I was thinking I could do that again, but in C++ instead. Any ideas how?

In BCB there's probably a class somewhere to do it, but here's the method a REAL programmer might use ;)

Code:

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#include <stdio.h>
#include <io.h>
#include <fcntl.h>

// ...inside some function somewhere...
int fd = _open("thefile.ext", _O_BINARY | _O_RANDOM | _O_RDWR | _O_APPEND, _S_IREAD | _S_IWRITE);

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Look up _open, _close, _read, _write in MSDN for more details on their exact parameters :)

Thanks parksie, it worked great! :)