the code I'm using is

read(STDIN, $buffer, $ENV{'CONTENT_LENGTH'});
@pairs = split(/&/, $buffer);
foreach $pair (@pairs) {
    ($name, $value) = split(/=/, $pair);
    $value =~ tr/+/ /;
    $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
    $FORM{$name} = $value;
}
}
[download]

It seems to be pretty standard so my question was about how that stores the info form the checkboxes. I've never dealt with checkboxes since getting involved with perl so I wasn't sure how perl handled it. Changing to radio buttons is easy enough so I'll check into that.