this mean on vor dme i must have on radio the frequency dme of airport ?
A chart saying “DME required” means that this procedure is only available to aircraft that have serviceable DME instrumentation. Which DME(s) you need to tune to depends on the individual procedure.
Just tune the VOR or ILS and the associated DME will also be received and displayed in your avionics.
You are lacking basic IFR knowledge, please visit the VATSIM’s Learning Center.
Another good source of information is SKYbrary.
You need to improve your basic aviation knowledge and the things that you have asked for so far can easily be Google’d and also found on the above mentioned websites, on Wikipedia and other online aviation sources.