you can get the latest version of the unofficial patch (which is 2.2 at the moment) e.g. here:
http://www.3dgamers.com/games/vampir...nes/downloads/
and yes, the unofficial patches don't change the exe file, so you should be able to run the game fine without the CD by first applying the official 1.2 patch, then the 1.2 NOCD patch, then the latest unofficial patch.
-andy-