I suggest to wait until DotNetNuke 5.5.0 for Localization in the core. But If you are like me in a rush to acheve a web site project, you can use EALO modules and Apollo free modules. There code are easy to understand and apply some modifications.

Personnally, I "had" intetion to put DS Localizator into my DotNetNuke installation just for the feature of DSLocaleSelector into my skin. The PA module work incredibly great but the skin object is not working so far so I will wait until DNN5.5.0 to add this feature into my site.

I hope those pieces of advice help you in your choices.
Regards,
Joël