I would love to play the Oblivion Lost mod for S.T.A.L.K.E.R., but when I download the file, my damn high end PC won't even recognize the file. (.7z). I am running VISTA 32 and checked on line for a solution, but that never helps. It basically told me to screw myself. Any help. In case you haven't noticed. I am completely new to modding. The closest thing I have done to reading scripts was algebra in 1984 (i flunked).
I think you probably had this answered elsewhere, perhaps the actual thread for OL support (which is where this inquiry should be).
.7z => a file compressed with the 7-Zip program. See the 7-Zip site for additional info.