how to do this
 

Modify PHP settings to increase memory_limit option

can someone tell me what to do to do this please

Do you have access to your php.ini file? Are you able to restart apache? Sometimes you can increase the memory_limit in your config.php file - add this line right under the <?php line:

ini_set('memory_limit', 64 * 1024 * 1024);

(Change 64 to whatever you are wanting but it should be a exponential value of 2 (I hope I worded that right!))

many thanx lynne again sorted now