oracle 8 database error 12154 using apache server on windows NT

Hi, I'm trying to connect to an oracle 8 database using php 4.0.6 In my php.ini file I deleted the ";" in front of extension php_oci8.dll. I've set the format of tnsnames.ora and sqlnet.ora to the unix format. In the beginning of my php code I type: putenv('ORACLE_HOME = c:\oracle\ora81'); putenv('TNS_ADMIN = c:\oracle\ora81\network\admin'); I also used winnt search to make sure that I changed the format of EVERY version of tnsnames.ora and sqlnet.ora, I even changed the format of every .ora file in c:\oracle\ora81\network\admin' to a unix format, but I still get error 12154. In the forum on www.php.net I read something about setting user and group to the same as oracle's in the apache htppd.conf file, but I don't seem to have any such setting in httpd.conf. The apache I use is the one installed by default by oracle 8, so I don't think that is the problem. If you have any clue, any help would be welcome. Thanks, Kristof.