Yeah, basically everything complich8 said is true. The only application that uses those ports is Bittorrent. No hackers/viruses should be able to access yur computer. For the application name, just put "Bittorrent" because its like I said, that is the application that is using those ports. The change should really take affect immediatly, but you might want to restart the download (I don't know what client you are using but the download should start where you left off regardless). Anyway, I hope your future downloads are faster and more efficient. I speak for all of us (I think), when I say it was a pleasure to help you with your problem.