Adding a dropdown menu to an exposed filter

I have vote_up_down module installed and several views where nodes are sorted by date, rating, number of comments, etc. I want to add a dropdown menu that would allow users to chose if they want to see all nodes rated, say, above -5, above 0, above 5 or absolutely all nodes.
Right now all I can do is provide an exposed filter where the user has to manually enter the threshold. Can I change this filter's form so that it offers a choice of "all, greater that or equal to -5/0/5"?