Okay if you installed the game on d and the save games are d - you're okay.
Now, Open the Rhem 2 folder.
Then Rhem2_E folder.
Then DATA folder.
Last open DPOT folder.
Place all those saved games in that folder.
Close all the folders and play as usual.
You should see the saved game.
Also be sure that each number has 2 text files - one a and the other b.