Unable to load dynamic library - Access is denied.

Hi, I am trying to get php version 4.3.0 to work with sybase. I am using Apache 2.0 on Win NT 4.0, service pack 6. I have been able to get PHP to work with the server, but not with Sybase. When I bring the server up, I get this message: PHP Warning: Unknown(): Unable to load dynamic library 'c:\php\extensions\php_sybase_ct.dll' - Access is denied. I have copied all dll's to the win nt directory, and copied the php_sybase_ct.dll to the system directory, as well. My php.ini has: ; Directory in which the loadable extensions (modules) reside. extension_dir = c:\php\extensions\ extension=php_sybase_ct.dll My httpd.conf file has: LoadModule php4_module c:/php/sapi/php4apache2.dll AddType application/x-httpd-php .php I have checked the archives at php.net and couldn't find anything similar to this problem. Any help would be appreciated. Thanks, Leonard Rutkowski