Sounds like it is time for an UPGRADE. New CD burners are as low as $30 and will be faster than your old one. If your computer will suport it buy a SATA drive. SATA refers to the interface between your computer motherboard and the DVD. As Laterun said they are real easy to change out.
If you can't figure it out just find one of the neighbor kids and have him or her do it.
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"Even if you are on the right track, you'll get run over if you just sit there." Will Rogers