Trip planning

Most likely the easiest way to travel to Oulu is by flight via Helsinki.
Finnair ( http://www.finnair.com/ ) and Blue1 ( http://www.blue1.com/ )
fly regularly from Helsinki to Oulu. From the airport to city center you
can take bus number 19 (30 min, about 5 euros) or taxi for about 20-30
euros.

The actual meeting will be held at the University of Oulu, which is
about 5 km north of Oulu city center. There are no hotels at the
university area but plenty of them in the city center and buses (15 min,
abt 3 €) run regularly between university and city. Taxi costs between
15 and 20 euros. See also http://www.ee.oulu.fi/mvg/page/location

You can find a map showing a couple of hotels and the university at
address
http://maps.google.com/maps/ms?ie=UTF8&hl=en&msa=0&msid=113176354257650435601.00044b1034d3123bd80f0&ll=65.039697,25.460129&spn=0.068238,0.233459&z=12
The university has a fixed price for three of hotels shown on the map as
follows:
Cumulus: Single room 90 euros / night, Double room 115 euros
Scandic: Single room 94 euros, Double room 114 euros
Arina: Single room 92 euros, Double room 112 euros

If you want to book a room for these prices, let me know in good time
and I'll do the booking for you.

A more comprehensive list of hotels in Oulu can be found at
http://www.oulutourism.fi/en/oleminen/majoitus.aspx
If you plan to combine the trip with a holiday and/or want some more
information, you could refer to, e.g., the following web pages:
http://www.oulutourism.fi/en/etusivu.aspx
http://www.visitfinland.com/