I am hosted on a Linux server (Red Hat 7.2 according to the Telnet login), and have php 5.2.6 installed courtesy of my host who has given me full access to it. He also created a mysql5 database for me in the process.
Running the phpinfo script returns all of the information one would expect to see with entries for mysqli and mysqlnd however trying to runn install.php for the latest WP download still gives me the "appears to be missing the MySQL extension" error.
I'm way past my comfort zone now and going blindly here. I'm not sure where the problem lies - I've read the countless threads about uncommenting the 'extension=mysql.dll' however my php.ini contains nothing of the sort - commented or otherwise, this despite the phpinfo output.