A warning came up from Trend Micro Internet Security that uTorrent wanted to acess the internet.
I accidently blocked it and I don't know how to reverse this
Maybe have a look at clicking the "Virus Protection FAQ" link in my signature, and following that to the Trend Micro link. There might be something in their help files/FAQ.
Ok, do this: Main console -> Network security -> Personal firewall -> Direct connection (or whatever firewall you usually use, it should have this little window icon thing next to it) -> Edit -> Exceptions. Ok when you're in exceptions, go to add and then go to the C drive and add the uTorrent .exe. Pretty sure that should work.