Dell Vostro 1014 Laptop Computer "cant record dvd formating" Questions

dvd's are set up where after you put something on there you cant change it ( cant get rid of any info) and sometimes add any computers give you the option usually to change that when you first put the

cant get any sound on tv Hi there using vga cable for picture and twin phono lead for sound plugged into my headphone jack on laptop and into all the red n white bits on tele but still no sound??? ...