repetier 0.92 on xyz. at a loss

I don't know what im doing wrong. so I got the 0.92 followed it to the letter, but am confused. I took 0.92 opened the ino in arduino and replaced the two files that I was supposed to. or did I?  the problem im having is if I get the ino file from 0.92 and replace the files from that same directory what good does it do?  im thinking that I need the repetier firmware from another source to put usbcore.cpp and variant.cpp in to the downloaded firmware. does any one have the compiled ino that will work on a 1.0 xyz printer. one with the files replaced?  if so I would be so thankful.