PhpBB3 BBCodes

I use phpbb3 3.0.6

Now external links opens in the same window. How can i change that in to opening in a new window?
I found already a mod called Prime Links. Is there another way to achieve this?

Grts.

Prime links works fine. I am using it here.
And its easy to install. Any reason not using it?

Not really, since it works fine here. I 'll use prime links then. Thanks for the responce.