cgi scripts showing blank page

It could be a MULTITUDE of reasons. Check your error logs. Usually it's an error, and you SHOULD see your error in there.

If not, add this line just below the path to perl:
use strict;

That should make sure you find out the errors causing the problem. If not, then add this to it:

use CGI::Carp qw(fatalsToBrowser);

That should print a software error, WITH the problem.

HTH,
Richard