print '<INPUT TYPE="HIDDEN" NAME="PROCESS" VALUE="PARTTWO"><BR>';

##</code><code>##

if ( param('PROCESS') ) {
 # They're using your form to process their input...
 # Now you can check if the filename is given
 if (!defined($report)) { die ...; }
} else {
 # They're using your program for the first time
 print "7.) What do you want to name ...";
}