Where can I find "Hindi to English" dictionary?
On software.informer.com, you will be able to find a quite large number of such free dictionaries. Some examples that are worth to be mentioned are: Supersoft ScribeMagic, Sheel's Dictionary, Shipra's Dictionary. Furthermore, there are two online solutions, which you might find useful: Hindi-English and Universal Word - Hindi Lexicon.
Out of all these, I would suggest Shipra's.