The DVD writer installed in your computer might have a number of snazzy features, but portability is not among them. If you need a DVD writer while travelling or otherwise away from your computer, think about converting that internal IDE or SATA drive into a portable external drive that can be used with any computer that is equipped with a USB or FireWire port. Doing this involves purchasing a drive enclosure kit, which is fairly inexpensive, and correctly installing that enclosure on your DVD writer, which is fairly straightforward.
Use the screwdriver to loosen the screws holding the enclosure kit's drive tray in place, following the instructions that came with the enclosure kit.
Remove the drive tray from the enclosure.
Plug the drive tray's IDE or SATA cable into the IDE or SATA port on your optical drive.
Use the screwdriver and the screws that held the DVD writer in place inside your computer to fasten the optical drive to the drive tray.
Remove the front panel from the enclosure (if there is one) and slide the drive tray into the enclosure.
Use the screwdriver to tighten the screws holding the drive tray in place.