+2  A: 

Have a look, I don't know if this could help you: Filtered Lookup Lists in SharePoint

Aidenn
Unfortunately, my particular list will grow bigger and bigger, with few new elements added periodically which will become inactive in short time. So, in short term, the solution from the article is working fine, but in long term I must find another alternative.
alexandrul
A: 

I'm looking to build the same thing. This article seems to be helpful. I will try to implement this and I will report back when I get a chance.

Nathan DeWitt
It would be nice if that solution will work, but I hope to find a solution which doesn't require Sharepoint Designer.
alexandrul
A: 

Take a look at this post discussing Sharepoint Cascaded Lookup.

It seems ok, but I want to find some documentation about the sharepoint's native filtered lookup column.
alexandrul