PLEASE HELP! HOW DO I BURN A 90Mb. CDI FILE USING NERO

is there anyway i can do this? please explain in full, also, do i need to add a dummy, how do i do that, and how do i burn a cdi which i can convert to an nrg, but how to i burn it with a dummy? is it possible? please help. my .cdi is 90 megs, i can convert it to a .nrg but dont i need something else? please help ASAP
thanks