What is the best way to travel from Brussles to Antwerp by train? How much does it cost? how long is journey?

Please, any more info?

The best way is using the Intercity Train to Amsterdam which departs hourly at minute 20 or 22 and takes 37 minutes to Antwerpen with one intermediate stop at Mechelen. Other intercity trains take about 43 minutes to include three stops in between. Interregio trains take 45 to 50 minutes and have 6 or 7 intermediate stops. A total of 5 trains are departing hourly from Brussel Centraal Station to Antwerpen. The regular ticket is €6.60.


Source(s):
http://hari.b-holding.be/Hafas/bin/query.exe/en?

There is only one passengertraincompany (besides Thalys and EuroStar but that are highspeed, international traincompanies)
http://www.b-rail.be/main/E/index.php is your friend

Just fill in the stuff, Antwerpen-Centraal is the main station in the centre of the town. Brussels-Midi Brussels-North and Brussels-Central are the main ones.
There is a calculator for your specific route(detailed view=>€uro) http://sefora.b-rail.be/sefora/Sefora/berekenen.do?action=accessTicket&langue=3&from=300 3&to=1006&travelDate=14-04-2009 (dunno if this shows up correctly for you)

main overview: € 6.60 one-way(double for return ticket)
weekend ticket(friday 19h-sunday) € 7.40 return ticket
senior ticket(+65):€ 5.00 return ticket

the train is great and its a good half hour you wil enjoy it ?about 5 pounds fifty return ticket ?great zoo just outside the station if you are interested?