If i understand your question correctly, i have to admit that you really have some guts.
You post a question in the discussions forum of the VENDOR of a product asking HOW TO HACK THE PRODUCT?
It would be similar to ask at MSDN how to hack a Windows version.......
Therefore, you wlll not get any other answer other to: Pay for the license as anyone else does!
If you fail to do so, you are breaking the EULA, hence the law, which will result in prosecution.
Norbert
EDIT: If you are a student, looking for a cheap version of LV, you should know that NI has an academic program with a special student edition of LV. So no need to break laws in order to get a reasonable price a student can effort.....