Ok this should probably be made a sticky as it is pretty helpful.
Lets say you downloaded a rar/zip file that has a password but the poster hasn't provided it.
Here is what you do.
First lets take this link as an example

h**p://rapidshare.de/files/3726427/Live.for.Speed.S2.0.5A.CRACKED-ST0N3D.part3.rar.html.
Now go to google.

Copy and paste the last part of the link "Live.for.Speed.S2.0.5A.CRACKED-ST0N3D.part3.rar.html"

Click the search button.

If the download is a popular one it will be on a lot of sites on the search return and one has to have the password.

Please note this may not work for ALL downloads.

Good luck!

Kindly read the rules mate. post it at the right section.

Moved to tutorial section.