DVD data burning

I m workiking with Nero strat smart 7.0 , I want to burn DVD data , but at buring time it ask to save image any location like C;\my documant ,after this how i do for write dvd data in DVD.

Forget going through StartSmart. Open Nero Express-> DATA-> DATA DVD, then add your files. Hit ‘Next’. Under ‘Current recorder’ use the drop down to select your burner and put a blank in it, then ‘Burn’.