Thank you for your helpful assistance in explaining the situation to me. It would seem from the advice I've been given that I don't need to worry about compatibility when it comes to application versions. But I do have a follow up question. Are there any specifications or installation options that I should look out for? Are there installation options I should ensure that I have selected for my home installation to ensure the behaviour is the same as my host machine? Dave -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php