you may not need to, if you own a game, your legally allowed to download and have the roms for that game i used to download the roms for games i owned so i could play them on the PC, like my old Nintendo 64 died, so i played Zelda and mario on my PC,
and it being a PS2 it shouldnt take much to power an emulator on your PC.
back to your original question, yes, there should be adapters available for RCA to HDMI definitely and maybe for VGA and DVI