http://maps.google.com/maps/ms?ie=UTF8&hl=pl&msa=0&msid=11712616... - I've added on the map, the route of bus line 210 and marked names of bus stops ("Port Lotniczy" and "Dworzec Główny").
The line 210 is only one bus line that you can directly reach the city center. Traveling by bus line 110 is a bit complicated, because then you have to get to SKM (Fast Urban Railway).
BTW Train connection from the airport to the city center is under construction, so you have to choose between bus and taxi ;-)
Leinad