two questions: cdi>>iso and use nero; use psxcopy?

was curious, if i could convert a CDI image to an ISO image and burn that iso with nero instead of dj? and i got psxcopy6, but the image format is .cdp, how do i burn cdi images, or isn't this possible. i ask cuz i'm using a method to turn selfboots to nonselfboots, but the method does not work on some games (the games i wanna burn the most)

thanx for any info