help! how can i determine if a DC game image file (.nrg or .cdi) is self-booting

[blackice2004]

thanks, i've checked with nero since i dun have alcohola. it tells there are two track which are 1mb(iso 9660 mode2/XA) and 318mb (CD-ROM Mode2/XA). does it mean that this is a self booting image? when i tried to open it by winiso, i have seen that ip.bin, 1st_read.bin and some "floders". i am quite new on dc image stuff, how can i tell if it has dummy file? btw, the image is .nrg

thanks again