I just purchased Xpadder and when I attempt to download it it says it fails. When I retry it opens a window to select a program to open the download in. I apologize in advance of this has been asked before, I did a search and could not find it on the forums. Reading online I see that I have to change something in the registry? UAC? Before doing this i thought it wise to seek advice here. I am not super literate when it comes to computers, just really want to be able to alt+tab with a controller

Thanks for your time!
Jon