The CRC is located at the back of the building on the right, follow the indication P3
Ask for a ticket to "Louvain-la-Neuve-Université" (*). Either you take a direct train to Louvain-la-Neuve or the line Brussels-Ottignies-Namur-Luxemburg (train every 30 minutes).
Change at Ottignies and take a train for Louvain-la-Neuve.
(*)Do not mistake your train! Notice that there is also the city of Louvain (Leuven, in flemish) which is situated about 30 km from Louvain-la Neuve. When buying your ticket, ask for "Louvain-la-Neuve-Université", it is a bit long to say but you will arrive safely to the correct place.
From Brussels National Airport (Zaventem): The airport is connected to Brussels by train (every 15 - 30 minutes). The tourist and information desk can help you to reach Louvain-la-Neuve. This service is open from 8 A.M. to 9 P.M. and is located in the baggage hall of the airport. A taxi from Brussels National Airport to the CRC costs around 70 Euros.