I'll test WiiSX with a retail game and a burnt game and i'll get back to you
Sorry but retail and burnt/backed up ps1 games don't work on WiiSX.
i tried a retail copy of Dragon Warrior 7(ntsc) and a back up of it, they did not work.
i also tried a retail copy of Resident Evil 2 and a back up of it, it was the same thing.
WiiSX will run iso's from dvd, but using a USB flash drive to run the iso's would be alot more faster.
you could buy the games and rip them with your pc, takes about 5-10 minutes, depending on the game(harvest moon is only 25MB)