Ok. Let me see if I can help. Under Nero do you have either Nero Express or Nero SmartStart (either should work). I have a shortcut to Nero SmartStart on my desktop that I use (but can't really remember how I got it there

).
If you open the Nero Express it should give you an option to choice what type of files you wish to burn (music, data....). Choose "data disk", "add" then browse and choose your data, when you have your items highlighted "add" (at the bottom), when your done click on "finish" (at the bottom) to get that screen to go away. Click on "next", choose your recorder, click "burn" at the bottom.
For the SmartStart you have two options in the upper right hand corner. Choose either DVD or CD then it should bring you up some options right under it if you just hover your mouse over it you see your options. From there it should be the same as above.
When I first got Nero I couldn't figure it out either! I had to have the computer tech at work show me how to create the SmartStart shortcut and since then I've been burning away!! I have a Plextor DVD Burner.
HTH! Feel free to PM me if you have any questions! I hope I didn't just confuse you! LOL!