drmtr

I'm a total newbie. Followed directions from here: http://forums.afterdawn.com/thread_view.cfm/422740 and successfully ripped but when I start imgburn and select WRITE and the file to burn (C:no_label/video _ts.ifo) I get the message "You're in the wrong mode to burn dvd files. Switch to BUILD and try again." Trying to BUILD didn't work, either. Where do I go from here?