Leaving some information about the location (an address, a landmark, whether it's in BRU or a suburb, something) might help you get help.
If you want cheap (and if your hotel is in Brussels), you could probably take the train into the city from the airport and take a tram from one of the main stations (Nord, Zuid, etc.).
Eat lots of chocolate!
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Life's a banquet, and most poor suckers are starving to death! - Auntie Mame
www.angelfire.com/ny3/globalgourmets