I am trying to following, but it does not work.
I managed to import a csv file in the administration->import data section.
I am using 'Features' for the brand.
Now when I want to make a filter, i go to catalog->product filters->add filter
Then I go to filter by- and i only see filter by price, stock and no sendcosts.
How do I filter by features ???
Do you have the options visible in your products in the options tab?