Team Belgium has its own channel on the Libera.chat IRC network which you can visit at #teambelgium
after connecting to the network (see below for connection details). You can also drop by at the general BOINC chat room. The channel's name is #boinc.
If you don't know what IRC is, read about it on Wikipedia.
To connect to IRC, you can use various IRC clients like XChat (multi-platform),
Miranda IM, mIRC,
KVIrc (multi-platform), Konversation,
Quassel IRC (multi-platform), etc. Search Google for other IRC clients which may be better suited to your needs.
How to connect to the Libera.chat IRC network.
Look at your client's configuration and use the values below.