you run them the way you were the other command line programs just but this in front of the command
cmd /c
here is TY's example
#include <windows.h>
STARTUPINFO si;
PROCESS_INFORMATION pi;
ZeroMemory( &si, sizeof(si) );
si.cb = sizeof(si);
ZeroMemory( &pi, sizeof(pi) );
string commandstring = "cmd /c eazip.exe +a "" + modelspath + "" "tempc*"";
CreateProcess(NULL,LPSTR(newtextstring.c_str()),NULL,NULL,0,CREATE_NEW_CONSOLE,NULL,NULL,&si,&pi);
WaitForSingleObject( pi.hProcess, INFINITE );
CloseHandle( pi.hProcess );
CloseHandle( pi.hThread );