IMHO, your needs are going beyond the help I can give you via a free public forum (I will not speak for someone else).
  • Do you have enough admin rights on the system where you try to register the DLL?
  • Have you tried to register this DLL on other computers where you have enough admin rights? Do you see any differences? If yes, which?
  • If you would read and understand the batch file you are creating, you would see that PrinterRename.exe needs an argument.

Again, if you do have problems of this kind and you want to discuss them here, I think you should discuss them in "General Discussions"