hmm...
well copy the files (say if there from gunz/interface/default.mrs), you would make a new file...put the filelist generator in that one also put the new files(the ones you have updated or changed) then open the filelist generator then it will make a filelist.xml of the new items...
DONT PUT THIS ONE IN SYSTEM.MRS
right click on the filelist(GEN) (the GEN=filelist generator ver of file list) click open as or open with, then click on note pad, now open filelist in system.mrs fine the stuff from filelist (GEN) and copy the crc code to the filelist in system.mrs