Now I realise that even though I read BobMaster0's message on the Japanese forum, I forgot to answer it (sorry) ...
There are quite a few good dictionaries online for Chinese; actually I don't use them much myself as I have a few paper dictionaries (Chinese-French, and especially monolingual Chinese) I bought a few years ago...
Yet I think I can advise a few (Chinese-English, English-Chinese) dictionaries online:
(it's bilingual; therefore I don't have to give you hints on how to use it)
(just type words in the text box and click on the only button
If you speak Korean, you might try http://dic.naver.com/
(I recommended it a few times already here, and I saw some other people recommended too after I told them
Except these, I'm afraid I can't help much...