Permanently block an application from installing without reversal

Hello - First post here, looking for a little help.

I'm wondering if it's possible to permanently block a program from being able to be installed. Does anyone know of existing software? Or can anyone do this themselves, and is willing to help me do on my computer?

Thanks a bunch guys, don't know if it's cool to ask questions's like this here, if not can someone point me in the right direction?

Adam

 

hello, this will not be enough. I want all the functionality of a normal administrator account. Without having to tell someone else a password, and I cannot have the option of downloading my favorite game, I'm hooked, as much as it's easy to say "don't download it," it's not that easy for me.

 

Correct, the hosts.txt file. Like you said, I was able to easily reverse it when I really wanted to.