Umm unless you're saying its gay because of its sexual orientation, then calling it "gay" really doesn't help solve the problem. If you could give us some more reasons as to WHY its being gay, we might be able to help you a bit more. You can download windows movie maker from download.com, search for movie maker... its one or two on the list.
Download the latest Windows MovieMaker 2. It's like reinstalling MovieMaker, but to a newer version. Hopefully, whatever kinks it did will dissapear with a fresh install of the latest version. Kind of like flaky drivers. Reinstall to a newer version and it should work most of the time.