The main difference is the format of the drive. You see Irwin, If you have a CD+RW drive, then your drive will only support CD+R and CD+RW and other CD and DVD formats of the like. If you have a CD-RW drive, then your drive only supports CD-RW and CD-RW and the like. I beleive you can purchase some drives that are CD+/-R & RW and CDs/DVDs that are +/-R & RW, but I am not entirely sure. Hope This Helps!
The Difference Between CD+RW and CD-RW
The main difference is the format of the drive. You see Irwin, If you have a CD+RW drive, then your drive will only support CD+R and CD+RW and other CD and DVD formats of the like. If you have a CD-RW drive, then your drive only supports CD-RW and CD-RW and the like. I beleive you can purchase some drives that are CD+/-R & RW and CDs/DVDs that are +/-R & RW, but I am not entirely sure. Hope This Helps!
--Mr. Technology