IgniteTCS 0 Newbie Poster

hi.
i would liek to know how i could make my vb project recognize the end of the slide show, so that, i can call another slide show once it ends...
is there a way i can loop the slide show through visual basic, without needing to open the ppt application window?
i am opening the pps file thro shellexecute...
please help me as soon as possible...