UTorrent Help

Well everytime i look for a movie on Torrents Search Engine it all works perfectly but it doesnt send the file to UTorrent. Instead it sends it to Limewire. But limewire is never able to download the file because of weird reasons that im not even aware off. It wasnt always like this, it used to send it to UTorrent but for some reason it stopped. But what im trying to ask is how can i make UTorrent my FIRST choice for Downloading Movies? Its been so long since i downloaded anything. Im starting to get behind on all these new movies.

Thanks in advance to anybody that can help me and those who try.