Mac Forum / Applications / MS Office / March 2006

You'll probably have to use a commercial service. There are a few free
WinWord password crackers, but they only work with very short passwords.

You can Google for commercial crackers. One that I've tested is

   http://ref.decryptum.com/?114479

which will decrypt and display part of the doc for free - you pay only
if you choose to download.

Disclosure:
If you use that URI and choose to download the decrypted file, I may get
a commission.