Switzerland has its own currency called "Schweizer Franken", the written form is "CHF" or "SFr"
Wikipedia article: http://de.wikipedia.org/wiki/Schweizer_Franken or http://en.wikipedia.org/wiki/Swiss_franc
You can get money at ATMs (called "Bankomat" in swiss-german), for example at the following banks:
You can pay with a credit card in most places, however you should ask first - some places only accept swiss bank cards like "Postcard".