i got an Oritron DVD720 as a gift. It says it an play cd-r. i tried burning a vcd with NERO and an Acer 24 10 40 cd-rw drive. When i tried to play them it says no valid data ( or disk, cant remember right off ) . any ideas? also i am using Memorex cd-r 48x multi-speed at 4x. Is it possible that i sould use a faster or slower speed. Any help will be great.

Bob