Welcome in our little community of Bloodsuckers, Stelios.
I'm afraid that the news I have for you might be of a troubling sort. Neither CA nor TFN are compatibile with any other mods. They simply change too much in the game. That is not to say you couldnt play both, and other mods, on one computer. All you need to do is to have cleen copy of Bloodlines, copy it to different folder than the orginal one (e.g. add CA folder in C:/ProgramFiles/Activision and copy it there) You may have as many copies, and therefore mods, as you want, capacity of your hard drive beaing the only limiting factor.
@Malkav: Maybe it's a good idea to sticky the guide to multiple installs?