Hi, i am new with Boost, I have a good gpu and a good cpu. I want to play skyrim full modded, and when saw boost, in the image said as recomendation that with good hardware, i should disable dynamic resolution. How do i doit, and what recomendations do you give me?
If you are using legacy HiAlgoBoost for Skyrim (downloaded from Nexus site), then press SHIFT+END when in game. This would set fixed-resolution mode. 

> what recommendations do you give me?

Just try this and that. Start with the default mode, see how it works for you. You can always switch between the modes, as explained in the FAQ. For more advanced approach, you can even edit HiAlgoBoost.ini, for fine tuning. But this is rarely needed.