adobe reader 9. toshiba laptop vista premium.1GBram . in program files there's alot of files with the adobe icon next to them. ahere all dll files. when i try to open one of these adobe opens with the black screen with a message as follows: adobe could not open (name of file) because it is either not a supported file type or because the file has been damaged (for exampleit was sent as an email atacement and was't correctly decoded. don't have a printer. these icons are in a lot of files. why can;t i open these?