[TYPO3-english] Install Tool cant access local mysql

[peter williams]

Hello.

I'm trying to install and try out typo3 on my local mac osx lion.
I've installed apache2, php and mysql (via mac ports). All seem to be running as should.

I can connect to the mysql sever on the command line:

> /opt/local/lib/mysql56/bin/mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 7
Server version: 5.6.13 Source distribution

Ive unpacked the typo3 installation and entered 
localhost/typo3/intropack-6.1.4/typo3/install/index.php
into my browser which then opens up the install tool with
"Installing TYPO3 6.1"

I enter/select:

Driver: mysql
Username: root
Password: same as on the command one client above
Host: localhost

However I get the error message:

There is no connection to the database!
(Username: root, Host: localhost, Using Password: YES)
Go to Step 1 and enter a valid username and password! 

Whats wrong?
Im sure the password is the same as that which worked on the command line client.
Should I be entering something else for "Host".

Thanks very much in advance.