Help With Sega Master System roms onto PS2.

Hi, I'm having abit of trouble and was wodering if any of you guys could help me out here it would be much appreiated.
I have burnt Nintendo roms onto my ps2 easily cause it was an .ISO file
but I downloaded SMS roms from a torrent site and the file that it d/l was a
.7Z file so i attracted it to a folder and it left me with a folder of all the SMS roms, i downloaded a SMS emulator for ps2 and and im not to sure how to get this ready for burning? i cant burn it through DVD decrypter cause it anit .ISO :(