Follow some easy steps to make changes in your CMD
1) Download Resource Hacker
2) Now Watch this video
3) After watching this video save it as with anything.exe.
4) Go To run and write the name and see, you just changed Microsoft with yourname.
NOTE: YOU CAN'T CHANGE IT 1 BY 1, CHANGES WILL ONLY TAKE PLACE IF YOU EDIT CMD.EXE NOT THE NEWNAME.EXE