Iron Scarecrow here's the link for the RTPe.exe file. It's a hard site to navigate - the download is hidden away at the bottom on the right side. There might be readme instructions in the archive.
http://membres.lycos.fr/rpgame/maker.html
EDIT
Sorry, the download is a dead link.
Try this one:
http://www.bur.st/~rpgxst/rpgmaker/rpgmaker2000.html
This page has the full program for download and the Run Time Program that Onyx thinks will help the game to work.