Task 3: Install and configure a DVD rewriter

Step 1: Check your system requirements
When buying your drive check all of it to see if everything is in place you buy a drive, make sure your PC meets the minimum requirements, unless you're willing to accept performance that's slower than the drive's rated speed.

Step 2: Document cable connections
Make a note of your system's current cable connections before unplugging anything. Snapping a photo or two for reference is a good idea. You must make sure to document your PC's current IDE-cable connections. Power down your system and open the chassis. Most PCs can accommodate two optical drives on either of two ATA/IDE channels, one of the drives would act as master and the other as slave.

Step 3: Set drive jumpers
Resetting a drive's jumper is as easy as removing a plastic tab and sliding it onto a different set of posts. Before you set your new drive's master jumper, check the setting on the drive that's already in your system to see whether it's set to "cable select".

Step 4: Install the drive in a bay
Usually in most systems, you can slide your new drive through the front panel. Take a few moments to consider drive placement before installation. Moving the old drive down a bay may make it easier to attach the correct connectors to the two drives.

Step 5: Attach the interface cable
Attach the cable to both the master and slave drives on the same channel. The connector on the cable you use depends on your system and drive configuration. If you are using the master/slave configuration, it doesn't matter too much if the cable's centre or end connectors are connected to the master or slave drives.

Step 6: Attach the power cable
Power connectors are keyed to insert only one way. You must attach one of the power leads with the large white connectors to your drive. The four-pin connectors are keyed to allow insertion only in the correct orientation.

Step 7: Attach the audio cable
Many older systems require an audio cable to connect your optical drive's four-pin analogue output to an output on your sound card so that you can play audio CDs on your PC.

Step 8: Boot your system
After checking the cable connections, power up your system. To confirm that Windows recognizes the drive, go to My Computer and look for an icon for the new drive.

Step 9: Configure Windows' settings
Open the Device Manager to verify that Windows is set to use digital CD playback. Windows XP will probably set your drive to use digital CD playback as a default. To verify or change the setting, right-click My Computer, and select Properties > Hardware > Device Manager. Click the plus sign next to DVD/CD-ROM Drives, right-click the new drive, and choose Properties.

Step 10: Install software
Windows XP includes a "lite" version of Roxio's Easy CD Creator that makes it easy to write files to disc, but most drives provide one or more software titles with larger feature sets, such as Roxio's Easy CD & DVD Creator 6.0. To install your drive's software, insert the disc into any optical drive on your system.

here is a demonstration on how to install a dvd re writer:
http://www.youtube.com/watch?v=ENos68lVWS0