IMAP DLL's and Extensions

BlankHas anyone use the IMAP functions in PHP4? I am trying to play with a couple of mail clients, and one uses the IMAP functions (for pop mail) and I can't seem to get it to work, and no real error messages other then it pretty much hangs on the read of the mailbox. Do I need to have a special build of PHP4 to support it? I have the php_imap.dll and the code in the php.ini uncommented to use it. It also doesn't seem to show up on the test php script that was on the list a while ago (extensions.php) which uses something like $extensions = get_loaded_extensions(); To see if the extensions are loaded. I also added the php_calendar.dll and uncommented that optional module in the php.ini and it also did not show up as an entry in the extensions. Any one... Mahalo! Sandy