The RCA/svideo outputs will work on that adapter but not SPDIF. M70, xps 2 and some others do support spdif but most notebooks do not. If your user guide doesnt' mention spdif out in the multimedia section, you don't have it.
I don't recall having the same problem before I had my 600m's chassis replaced with the D600's. But I can confirm that on the D600 when the lid is completely closed nothing is touching the lcd - one can see this by looking on the side....
There are software solutions such as http://www.bandwidthcontroller.com/ that enable you do do this. But require you to rearange your pc as a gateway as opposed to the router and have the PC run something like ICS. I don't know how 25...
You mayhave to do a registry hack for a mic column to show up in the volume control panel. Before doing that see if you can enable it in the volume options.
To reiterate my request for some time now: ability to show all 4 temps at the same time in system tray with different backgrounds/forgrounds to distinguish them.