For anyone who (for some insane reason) does not want the combined installation with TestDriven.Net - I can now offer an alternative. Note that this is exactly the same NCoverExplorer version as deployed with TestDriven.Net.
Download the latest NCoverExplorer versions from here.
I have also put together an FAQ which is bundled in the zip file...
Last but by no means least I see that both Scott Hanselman and Peter Waldschmidt had some nice things to say about NCoverExplorer - cheers guys, makes that 3am effort on Saturday night trying unsuccesfully to get through Jamie's firewall to his SVN server seem more worthwhile now... ;-)