shereen

So i found a few mods that i found nice like the graphics changer and the GPS type mini map but when i click to download it, i select open with WinRAR and then it says in a dialogue box C:\DOCUME~1\Rosamma\LOCALS~1\Temp\atmosphere_pack.zip could not be opened, because an unknown error occurred. Try saving to disk first and then opening the file. how do i install a mod so i can play it? please help thank you