Using the Speed/loading/nero directions

I went to the Speed-Loading-Nero 5xx section and figured that this was the way to make a backup of a DC game using Nero CD burning software. I did the steps and DOA2 did not work. The boot CD for Nero works perfectly but the game didn't. Are these the instructions to burn a copy or something else??? Ii am about to download Codename Veronica and I really want it to work so I'm hoping I don't make more CD coasters.