DVD-R isn't a media that you may record with this.
The good news is that single layer DVD recorders are under 99 bucks and I've spotted dual-layer DVD recorders for 99 bucks.
Please use http://www.google.com to ask questions like "What is a DVD recorder?"
I have Windows XP with a52x32x52x cd drive. I just tried to burn some movie clips I have collected on a Memorex DVD+R (4.7gb,120min,4x)cd. After a great deal of work it came back and said "no disc in drive". The discs are brand new. Am I doing something wrong or are these the wrong discs? I tried Movie Maker and Nero as well as Deep Burner. Please help