Some emulator recommendations and help

[skyrunner14]

Okay, so I'd really like to find some good NES and SMS emulators for the Dreamcast, preferably ones with SD card compatibility. You know, the ability to read ROMs off of an SD card (with an SD card adapter, which I just got today)? If that's not possible, I'd like some help in dealing with how to use ROMs with DC emulators without having to have burn them onto the same disc. I'd really appreciate any help with this, as I'm not exactly familiar with thi

[BionicKoalaBoy]

NESTER DC ( NES ) is brilliant, I haven't experienced any problems with it. I Don't know about SD compatibility though (?)