adding tabs to a view that's used with category module

Hey there,

I'm using a view to display my pages on a certain container's categories. The problem is that I try to setup two views that are connected with tabs (foo/bar) and (foo/bar/tab). The url's are well configured and everything works normally when I check out the views with their normal URL's, the only thing is that the TABS don't appear on the page when I go to see a category page that is replaced by that same view.

Any ideas on how to make those tabs appear??

Thanks