Ask HN: How do I filter out Internet Explorer 7 from Google analytics?

Hi, Any help will be greatly appreciated. The traffic is coming from my desktop application and skewing the real traffic going to this specific page on my site. I have created a filter in google analytics but it will not verify, as it says the segment is too small, and it contains 5000+ views. I am unsure what the pattern is and how to set this up properly. Thanks