recognizing modules problem

I am in the process of installing php 5 (have never had probs with earlier versions - am running php/mysql on an apache server on my windows xp machine) and am having problems with module recognition (I especially need mysql!). I have wrestled and reinstalled php 5 several times, following assiduously all the directions - also several times. Any suggestions, help, etc., etc. would be appreciated. After two days of this, I guess I am getting frustrated! I have set the extension directory: (And the path statement in autoexec.bat) extension_dir = c:/php/ext/ The Result: DOES NOT RECOGNIZE THESE MODULES (they are in the directory, I checked, and checked spelling, etc.) extension=php_exif.dll extension=php_iconv.dll extension=php_ifx.dll extension=php_iisfunc.dll extension=php_java.dll extension=php_mcrypt.dll extension=php_mysql.dll extension=php_oci8.dll extension=php_oracle.dll extension=php_pdf.dll extension=php_sybase_ct.dll extension=php_w32api.dll extension=php_yaz.dll extension=php_zip.dll RECOGNIZED THESE MODULES extension=php_bz2.dll extension=php_cpdf.dll extension=php_curl.dll extension=php_dba.dll extension=php_dbase.dll extension=php_dbx.dll extension=php_fdf.dll extension=php_filepro.dll extension=php_gd2.dll extension=php_gettext.dll extension=php_imap.dll extension=php_interbase.dll extension=php_ldap.dll extension=php_mbstring.dll extension=php_mhash.dll extension=php_mime_magic.dll extension=php_ming.dll extension=php_msql.dll extension=php_mssql.dll extension=php_openssl.dll extension=php_pgsql.dll extension=php_shmop.dll extension=php_snmp.dll extension=php_sockets.dll extension=php_tidy.dll extension=php_xmlrpc.dll extension=php_xsl.dll