the library #include<conio.h> has the function clrscr() which is supposed to clear the screen.
also helpful, in the same library, is the clreol() function, which clears the line, starting at the current cursor position.
i don't have acess to the <conio.h> library, and when my compiler deems me worthy, these commands don't work, but for you it may. it may also be a lvp file; seek, my friend and you shall find!
good luck!
~ThaniCC