help with install to one page only

I need help with this please. I've just got a calendar script that was simple to upload the files. I was told to just add this code into the page ( I want the calendar to go: d)Add the following lines in the file where you want HEC (Event Calendar) to be displayed <?php include "./HEC/calendar.php"; ?> Note: Your file should be present in the same folder where HEC/ is present E.g: ~/testcal.php [your file where you want to display event calendar] ~/HEC/**** [unzipped HEC package] ( I made a page called testcalendar.php and put it in the foldeer HEC, but I am getting error messages. Warning: main(./HEC/calendar.php): failed to open stream: No such file or directory in /home/webscape/public_html/HEC/testcalendar.php on line 50 Warning: main(./HEC/calendar.php): failed to open stream: No such file or directory in /home/webscape/public_html/HEC/testcalendar.php on line 50 Warning: main(): Failed opening './HEC/calendar.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/webscape/public_html/HEC/testcalendar.php on line 50 thanks to anyone that can help me.