To have exe files working again on windows 7, it is this easy
1.open command prompt 2.type in "cd\windows" press enter 3.type "regedit" press enter.
once you do that the registery editor will open. 4.press on HKEY_CLASSES_ROOT 5. click on defult 6. where it says value, type "exefile" that worked for me its that simple! hope i helped someone out