Alexpo1 – extremely kind of you, you are the sensible one (no car!!).
Looked at the Eurostar options to BRU then ICE but the journey is that bit too long. Price is about the same as flying direct to FRA, but only because of the messe that is on at the same time.
I cant understand why no one can come up with integrated European train solutions.
What is also interesting is the airlines seem to come up with solutions such as via TXL, a much longer route, but its the airline just trying to release more seats.
I have my options, will wait until meeting is finalised before booking.
Thanks to all who have helped.