downloads not valid win32 applications

#1
Hi.. I have tried downloading the vista disc and for that matter,many other things. When I go to the downloads folder and click on one of them,they all come up as an error that they are not a valid widows32 app. Anyone hear of this and how do I fix it?
I am having a startup problem on my Acer 5335 and need the disc/program to hopefully fix the startup problem. Any help is greatly appreciated. Thanks,John