When unraed it doesnt come out as an iso.Comes out with the game file & a 1kb cue file.followed the tutorial on this forum but it doesnt work.can anyone give me the settings for either prassi or nero?

well ...if your mame comes with a cue file then it's a cdrwin image. just convert it to iso file using "binchunk" or "cdmage" or any other iso converter. You can also read and extract the files using "isobuster". when youve done so, make a xbox iso image file using xiso. then just burn with nero. when you make a xbox iso file, there is no need to set anything in nero, you just burn :)