Since you want to help us out, let me help you get in.
Create a new Pootle account from http://www.pcbsd.org:8080/register.html
Login, choose the Greek Language.. and help us out with the cases that are half-completed or net even started.
I did most of the translations on the ethernet/wifi modules and many other individual parts, so if you want check around for any corrections you'd like to make..
The greek translation currently is 62% completed, and i think we are close to fullfill the rest till the next month.
Cheers 'n light it up,
Frozen on GRNet. ;-)