You mean RPG_RT.exe

But seriously, the RTP installation for RM2k was RTPe.exe for some reason I could never figure out, and also that game is an RM2k game, so he'll need to install the whole thing (Or just the RTP, though I would install the whole thing...)

He could get it to run in RM2k3 if he opens it in the program, the battles will be a bit odd since he'll have to change the battle charsets and such on his own. There's some other compatibilty errors as well, can't think of them at the moment, however. It's still best to run it in it's native program. (I'll host the stuff myself later, but for now he can use the external site)