DVD+R / RW disks?

[Compuhacker]

Hi got every thing working great and now its time to me to burn my back ups.
I went and picked up a pack of DVD-Rs, got home made an ISO of one of games, put one of the blank DVDs in my drive, opened PrimoDVD, and it told me my drive wasnt ready. (Meaning there was sone thing wrong with the disk) So I took that disk out and stuck another blank into the drive and same thing.
Now I was sitting here thinking maybe there was a prob with the DVDs or my drive it self. Thinking to my self, maybe I have DVD+RW drive, I looked at the drive face, and yep the damn thing is a DVD+RW drive.
So my question is, can the XBox read DVD+R / RW disks? I hate to come all this way and get screwed by my drive.

Thanks again