I remember burning my first backup game - what a nightmare. Who knows how many coasters. I read heaps of FAQs on burning a backup - none really helped until i've used some common sense. Here is what I did.
I use Nero Burning Rom 5.5X
1) Get Nero if you dont have it
, Put your backup in ur cd rom drive
2) Fire up Nero, cancel the window that comes up
(For a successful burn you need to make a nrg image on your hard drive)
3) Click on Recorder in the menu then choose Recorder; select Image Recorder (virtual device) then click OK
4) Click on File; New; then click on wizard in the new window that pops up. Click Next, select Copy CD,Next, select the source drive that contains the backup cd,Next and finally click on Burn
Sit back and wait until the NRG file is created
After its done restart Nero, click on Recorder, Choose Recorder Now select your burner (so that now the image will be burned on a cd, not hard drive)
5) Click on File,Burn Image >locate the created NRG image file on your hard drive, insert a blank cd if you havent done so yet choose the speed and burn it.