Keep in mind that while translation patches are not considered illegal, distribution of commercial game ROMs is. Therefore, the file DOES NOT include the actual Sailor Moon R game ROM. I suggest you check a search engine for other sites that may contain emulators and/or ROMs.
If you don't have a program to apply IPS patches, try
Sailor Moon R Patch (WinZip File)
Size: 32K zipped, 47K unzipped
Released: March 6, 2002. (Michiru's birthday)