Freeware Software Download

How to use a freeware software again after exhausting the limitations?

I heard that if you delete some registry files or something then you can download again. Supposing the limit to the number of times I open the free version of a software is 10 so after I use it if I install again then how is it that they know I have used it already and give a step by step way of solving the problem.

Public Comments

1. unistall the shareware. freeware does not expire- may have limitations from pro/commerical product get only freeware such as: http://sourceforge.net http://download.com search - then select filter 'price' - freeware
2. all you need is a registry cleaner http://www.keeptell.com/soft/79/business-software.html