How do I remove a program, I mean uninstalling it because of the trial period has ended, then reinstalling it.
How do I completely remove the trace of the program so it seems that It has never been installed in my computer.
well go top control panel and go to uninstall and remove programs and then remove
The best bet is to use Revo Uninstaller to uninstall the program, it claims that it scans for all traces of the program and removed all attached registry entries. However I'm not sure if it resets the trial period as well I guess it depends on the program too.
http://www.thesimplest.net/node/160
You might be interested in reading this article that teaches you how to use a trial software forever without using a crack. This trick freezes the trial period and you may use it forever if you follow the steps. However doesn't work with every program of course, big and complicated programs such as Adobe photoshop obviously won't work for example.
http://www.thesimplest.net/node/99