How do I put files onto a DVD?

Hi, I need some help on how to put files onto a DVD.

I have some files of a series of TV shows, which my friend gave me. Actually, she gave me the disk which contains the files, but I would need to give it to her soon, so I copied the files to my desktop...

I have empty DVD-Rs which is 1-4X MultiSpeed and 4.7GB/120min. How do I write those file onto the disk?

Also, I am using Windows XP Home Edition, with SP2.

Thanks a lot!
N.S