ok what i want to do is add a download button to my project with a progress bar

to download a file called eg my custom world at war zombie map.zip to

C:\username\appdata\loacal\activation\codwaw\mods\mapname

what i want is it to be installed in there but i dont what the user to have a choice i just what it to be installed there is that possible so when they click download it will download the file to that location