Maybe this will help.
Burn a CD or DVD In Vista
Applies to all editions of Windows Vista.
If your computer includes a CD or DVD recorder, you can copy files to a
writeable disc. This process is called burning a disc. By default, Windows
burns discs in the Live File System format, but you can also choose to burn
discs in the Mastered format.
To burn a disc using the Live File System format:
1. Insert a writeable CD or DVD into your computer's CD or DVD recorder.
2. In the dialog box that appears, click Burn files to data disc.
3. In the Burn a Disc dialog box, type a name for this disc, and then
click Next. It might take several minutes for the disc to be formatted in
the default Live File System format. When the formatting is complete, an
empty disc folder opens.
4. Open the folder that contains the files you want to burn, and then drag
the files into the empty disc folder. You can copy files to the disc folder
by dragging them to the disc icon or to an open disc folder. As you drag
files into the disc folder, they are copied automatically to the disc.
To burn a disc using the Mastered format:
Choose the Mastered format when you need a highly compatible disc that will
play in computers with an older version of Windows or in media devices such
as CD and DVD players that can read digital music and video files. For more
information about choosing a disc format, see Which CD or DVD format should
I use?
1. Insert a writeable CD or DVD into your computer's CD or DVD recorder.
2. In the dialog box that appears, click Burn files to data disc.
3. In the Burn a Disc dialog box, type a name for this disc, and then click
Show formatting options.
4. Click Mastered, and then click Next. An empty disc folder opens.
5. Open the folder that contains the files you want to burn, and then drag
the files into the empty disc folder.
6. On the toolbar, click Burn to disc. The selected files are copied to
the disc. When the disc burning is complete, the disc burner tray will open
and you can remove the disc. You
can now use the disc in another computer or media device. This type of disc
does not need to be closed.
To burn a Mastered disc, you need free space on your hard disk equal to the
capacity of the CD or DVD.
If you select files to burn but decide not to copy the files to disc, you
can delete the temporary files to recover hard disk space. To delete the
files, open the disc folder, select the files, and then, on the toolbar,
click Delete temporary files.