I'm not sure which one you would use on the dvd...I think you could just match the arm holes up with the sleeves and use Mattress stitch though...I tried to google around and see...I've never made a sweater where I had to attach them seprate...usually I just pu sts from the arm and work down...
Here is Amy's video on mattress stitch (ya might have to scroll down a bit)...
ohh I found
this that shows some tips...it might help some