Geoff the Duck on a borrowed computer ...
I know a lot of people here throw their hands up in horror whenever the name is mentioned, but it may be worth checking out McDonald's Burger shops. Ones in the UK have free wireless access available. I've not used it myself, so don't know the details. For Austria, try HERE...
Alternatively a web search may locate you other alternatives including libraries or other public institutions. This link might be useful http://www.wififreespot.com/europe.html.
Quack!
Geoff.