OK, i've used the Mac OSX version of this, as for some reason none of the other torrent clients worked properly. When Azureus installed it worked straight off, and immediately connected with a tracker and downloaded straight away with only a brief setup dialogue. It is so straightforward that I'm installing it on my Windows machine now, getting rid of BitLord and Burst. Wholeheartedly recommend it, and will be keeping track of updates on this one.