Here is a hack to make WinZip Or WinRar full version to end it's 30 day trail.
Follow these steps :
Download this tool called "Resource Hacker" from HERE
Install resource hacker and open it.
Go to File > Open > Give path of .exefile (In most cases it's :C:\Program Files (x86)\WinRAR).
Now go to Dialogue and select "Reminder" after expanding Dialogue pane
.
Right click on the number inside the "Reminder"and select " Delete Resource".
Now save the changes and save the new file with name "WinRAR"at some other location apart from C:\Program Files (x86)\WinRAR .
Copy and the newly made WinRAR file and paste is at C:\Program Files (x86)\WinRAR folder , and Obviously Replace Or Overwrite It .
Now restart the system and your WinRAR will no more give that 40 days left pop up !
Same Procedure You Can Apply For WinZip Also...
Okk Now You Have Successfully Cracked and Bypassed WinRar Or WinZip ..For LifeTime ..Enjoy :P