You could have a look at callcentric's calling card feature. If you singed up for an account for them and then brought yourself a local number in the Neatherlands, you could then call that number, get another dialtone, and then make your international calls at VOIP rates.
I do this exact same thing, although, I use my own Asterisk server running on a VPS to route the calls. You would not really need to do this though if you just wanted to make outgoing calls.
Have a look here for some details - http://www.callcentric.com/calling_card/
Only thing you might find is that, as the servers are based in New York, if you're calling somewhere in europe the call has got to make a couple of hops over the atlantic. Only way to test the quality though is to give it a go.