ORA-03121and ORA-12154 errors

[Anon]

For a couple of days now I've been trying to establish an Oracle connection with no luck.
My environment is:<br><br>

Win NT<br>
Apache 1.3.20<br>
PHP 4.0.6 CGI<br>
Oracle 7.3<br>

I get 2 types of errors:<br>
1) ORA-12154: TNS:could not resolve service name<br>
2) ORA-03121: no interface driver connected<br>

I get the first error when my connect statement looks like this:<br>
Ora_Logon("[e-mail]","passwd");
<br>
The second error comes up when I use the following connect statement:<br>
Ora_Logon("user","passwd");<br>

I have verified my tnsnames.ora and it looks fine I got rid of the CR, as I saw in one of the posts that CR might be messing this up.

My phpinfo() shows Oracle-Support as enabled. I created a direcotry called extensions in the root php directory and dropped php_oracle.dll in it, then I uncommented: extension=php_oracle.dll in my php.ini file and verified: extension_dir = "c:\php\extensions"
<br><br>

Here is my code:

&lt;
putenv("ORACLE_SID=db.world");
putenv("ORACLE_HOME=C:\ORANT");
putenv("TNS_ADMIN=C:\ORANT\NETWORK\ADMIN");

if(!($connection=Ora_Logon("[e-mail]","passwd")))
{
echo "Couldn't logon to database.";
exit();
}
else
echo "Connected to database";

OCILogoff($connection);
&gt;