This is the SweetFX preset I've been using; I think it makes the game look substantially better.
This is a modified version of the preset found here: Sfx.thelazy.net
If you don't have SweetFX, you can find it here under the new releases link: Guru3d.com
Maybe i am stupid but i dodn't understand how to install this mod.I had downalded it,but i saw only a text file and a couple of screenshots inside.Please help me.
This download is just a preset - you need Sweetfx to use it. Check out the link I posted in the description above, it should take you to a site where you can download it. If there are no installation instructions I'm sure you can find some somewhere on the web, youtube, etc.