I'd connect this way .. if possible of course!
V box to DVD player by SCART ..
DVD player to TV by HDMI ..
DVD player audio output to surround sound by red/white audio lead ..
The Alba only has these connections according to this photo ..
http://img707.imageshack.us/img707/3967/imgp0485.jpg
This is approximately what I use (with a Sony 5.1 setup) and it seems to work well enough ..