It can be achieved by using a simple and small software named Time Stopper.
Download Link: http://rapidshare.com/files/280196736/trial_software_forever.rar
1. Download and Install Time Stopper.
Now you will get a window as shown below:
4. Normally all softwares are installed in the program files folder.
To open it click my computer, click C drive, click program files folder and finally click software folder (total video converter).
Normally main exe creates a desktop icon and a start menu icon.
5. Click “choose the new date” comb box and set date as your wish.
Assume total video converter install 2009 May 1st. Today is 2009 May 3rd. Trial period of total video converter is 15 days.
Then you should set day between 2009 May 4th to 2009 May14th as the date.
6. Finally, You should create a desktop icon. Type a name for your trial version software (3) and click button (4) to create desktop shortcut.
Note: If the Software has desktop or startup folder shortcuts delete them and never use start menu link to open software.
(Because after trial period accidentally click old desktop icon or start menu icon trial period of some software will be permanently over.)