Cast aways const

[Daok]

Problem :

void Menu::DrawMenu(string sCaption)
{
    char * cTempo = sCaption.c_str();
                 //         int,  int, char*, WORD
    VideoXY(x,0, cTempo ,YELLOW | BLIGHTBLUE);
}//End DrawMenu 

I want to put the string (sCaption )to replace the char*(cTempo)

BUT I got that message :

error C2440: 'initializing' : cannot convert from 'const char *' to 'char *'
        Conversion loses qualifiers

How can I transform the string to char* ???