Visual C++ interface question

Hello,
does anybody know who to remove all the "//DEL" in front of each statemt with a single action, I mean not to go manually through all the "//DEL" and remove it with backspace for each line? Or maybe there is a block selection available?

Also, how to select a whole block and put comments in front of each line with a sigle action?

I know there is a option in VB6. Does VC++ 6.0 has it?
Can't find it. Appreciate your help.

void CDialogMain::InitiateLoading()
{
//DEL      //Matrix_CompareTo
//DEL      CString S;
//DEL      S="G";
//DEL      
//DEL //     Matrix_Lib
//DEL
//DEL      WIN32_FIND_DATA FileData;
//DEL      int Pos_in_Lib=0;
//DEL
//DEL      Matrix_Lib.RemoveAll();
//DEL      Matrix_Lib1.RemoveAll();
//DEL      Matrix_Lib2.RemoveAll();
//DEL      Matrix_Lib3.RemoveAll();
//DEL      Matrix_Lib4.RemoveAll();
//DEL      Matrix_Lib5.RemoveAll();
//DEL      Matrix_Lib6.RemoveAll();
//DEL      Matrix_Lib7.RemoveAll();
//DEL      Matrix_Lib8.RemoveAll();
//DEL      Matrix_Lib9.RemoveAll();
//DEL      Matrix_Lib10.RemoveAll();
//DEL      Matrix_Lib11.RemoveAll();
//DEL      Matrix_Lib12.RemoveAll();
//DEL      Matrix_Lib13.RemoveAll();
//DEL      Matrix_Lib14.RemoveAll();
//DEL      Matrix_Lib15.RemoveAll();
//DEL      Matrix_Lib16.RemoveAll();