The microphones are compatible PS3, PC and Xbox 360 (not tested for Xbox)
Without any manipulation by you (drivers are installed funds spots), they then just get yourself ds software operator 1 or 2 microphones (Singstar, Ultrastar, Just Dance, Sing it etc.)
The wired interface, poses no particular problem. The cables are robust, lightweight and long enough to dance to your performance (+ 3 m).
If you opt for a wireless interface, know that it can present the signal cuts microphones (by slightly decrease your score), more if it is the first use, set in 40 wireless microphones (do not seems a fair compromise) compare at Wired (40/53 = 13 + 40/13).