A few problems/Questions

Hi!I have just been starting to use VOX ATC... and i really like it so far, depending on a few problems though, It doesnt seems to be interacting with my AI traffic, i think i hear some of the traffic, not sure though, but i hear a lot of "crap"(im flying over sweden, and hear loads of DELTA and CANADIAN and so on... that cannot be right, is it possible for it to just interact with my AI and thats it?...And my other question,right now im flying with the Callsign "SK 1" but is it possible to use REAL callsigns?and so how do i do that?Thanks for your help as usual:)/Niklas