Oh, I had not considered varieties.. And I wanted an online dictionary with phonetic transcription actually. Thank you anyways. Yeah, I passed Phonetics and Phonology in the last two terms! ;p
You can't really have a phonetic transcription without specifying which area. Dutch phonetics can differ quite a bit depending on where you are. For example, what is [oː] in one place might be [əʊ] in another.