I'll cut the crap, can I use TweakUI with Vista Inspirat installed, I think it's possible but I'm not lucky with things like this.

yes you can , there's nothing in Vista Inspirat that will deny you to use TweakUI

I'm using the Bricopack right now and I have used TweakUI for years and never faced a problem

That's good to know, it works fine on my other PC that doesnt have Vista Inspirat and it's an amazing tool, you could do a lot of the things it does by yourself, but it makes things easier for you.