Useful sites, some with many interesting links:

Dutch Guilder daily exchange rate

the official 'Holland' site of the Netherlands Board of Tourism

the Netherlands 2

the Netherlands 3

the Netherlands 4

the Netherlands 5

Europe

Dutch for travelers

if you want to learn some Dutch slang

to find various Dutch anagrams for any word you submit

if you know more interesting and/or useful sites, tell me

Did you know that

we have tropical beaches, many of them with palm trees

we have 6 different languages and 44 deaf institutions

in the Netherlands the use of marijuana is legal

most of the Netherlands lies beneath sea level

the Dutch exchanged New York (then Nieuw Amsterdam) for Suriname in 1664