What you need to do is to go to
http://www.cablecom.ch/ and plug in your address. This will tell you whether you can get digital cable. Most of Nyon seems to have it (I plugged a few addresses in) so if you have the normal cable outlet you should be OK. If you just have an external antenna and no cable outlet you will need to get Cablecom installed. Call one of these numbers,
http://www.cablecom.ch/index/contact_de.htm but sometimes they are not very helpful.
One thing to do is look on your wall for a plate with either 2 or 3 connectors, 2 normal COAX, the other a smaller COAX with a thread. If you have this you have the cable installed, otherwise you need to talk to an electrician.
NASN is broadcast encrypted on Hotbird 7A, see
http://de.kingofsat.net/pos-13E.php for details. It is only carried officially on cable in Die Schweiz ie no Bluwin TV: