I can appreciate your feelings - I was concerned the first time I took my laptop abroad in 2001 (to South Africa). Absolutely nothing happened. Since then I've taken my laptop to 10-12 other countries (not including Austria, to be honest) and have never had a problem. I did have to take it out of my bag for routine security checks, but other than that I can't recall anyone questioning it. I do think it's a good idea to bring a copy of your recipt/proof of ownership. I did take out extra luggage insurance in case of loss, and did not leave it unattended in hotel rooms, etc. I have heard of ATA Carnet documentation that you can get to facilitate import/export issues (there is a link via the Department of State website). If you are really concerned, you might want to look into this. My opinion and experience is that a person travelling with a laptop for personal use is exceedingly common these days (and it's a great comfort for email, researching your destination, checking up on things back home, and keeping a journal). Have a great trip and be sure to write about your experience when you get back. I wish you and your laptop safe and swift passage at all points!