Most of the embassies have Citizens' Services Desk where you can ask for assistance. I am listing just a few major embassies contact information.
Belgium
Tel.: 502.07
Fax: 502.0, 502.07.11
E-mail: Vienna@diplobel.org
Wohllebengasse 6, A - 1040 Wien
Canada
Tel.: 531383000
Fax: 531383321
E-mail vienn@vienn01.x400.gc.ca
Laurenzerberg 2, A-1010, Vienna
Denmark
Tel.: 5127904
Fax: 5138120
E-mail: dkembvie@ping.at
Furichgasse 6, Postfach 298, 1015 Wien, Austria
http://www.um.dk/cgi-bin/dgk/htmldgk2.pl?omraade=dipkon
France
Tel.: 502 750
Fax: 502 751 68/77
Technikerstrasse 2, 1040 Vienne
http://www.ambafrance.at
Netherlands
Tel.: (01) 589 39
Fax: (01) 589 39 - 265
E-mail: nlgovwen@eunet.at
Opernring 5, A-1010
Consulate: 09:00 - 12:00
Embassy: 08:30 - 12:30 and 13:30 - 17:00
http://www.netherlands-embassy.at
United States
Tel: (+43-1-31339)
Boltzmanngasse 16, A-1090
http://www.usembassy-vienna.at/
United Kingdom
Tel: (+43 1) 71613-5151
Fax: (+43 1) 71613-5900
Email: vcenquiries@britishembassy.at
Jauresgasse 10, A-1030
Office hours: Mon - Fri 09.15-12.00 / 14.00-16.00 (CET), except public holidays.
