help with formail new to cgi/perl

can anyone tell me what i need to do to configure matts formail.the script works ok on one of my webs,but when i used it with a website that uses frames the redirect doesnt work,so it cant bring up the confirmation page i made.i use the redirect input tag in the html form.i dont know how really to configure the actual script to do it.how do you alter the script to redirect to a confirmation page? what do i input code wise.never used this formail script before or perl or cgi until this week.thanks