How do you edit e-mail filters?

Is there a way to edit filters? I'm going thru my Inbox and setting it up to automagically send new mail to specified folders. I've made a filter named Hulu and added e-mail from, lets just say "noreply@hulu.com". Further down in my e-mail I get another e-mail from "specailoffers@hulu.com". I'd like to add this second e-mail to the original filter named Hulu, but I can't seem to call it up. When I try making a new filter named "Hulu", it says there is a filter already by that name.  How can I pull it up to edit it?

While I'm on this, is it just me or does Hughes net seem to try putting way too much stuff on one page so it is almost not functional. Thier e-mail page is split up so I can barely see messages coming in and read the message I am looking at. Also on the Data usage page, I can't see the graph AND the amount of data I used on a particular day. I would like to be able to see the whole graph and see the amount used on a particular day without having to scroll. Just a rant I guess, maybe it is just me.

Thanks in advance!!