each of those 4 files: nero6009.exe, nve20022.exe, InCD40121.exe and NeroMediaPlayer1404.exe is an executable file.
after you download them, double-click them to start the installer.
do this for each of the 4 files, starting with the nero6009.exe file.
One Ring to rule them all, One Ring to find them,
One Ring to bring them all and in the darkness bind them
In the land of Mordor, where the Shadows lie
M.C. Escher - Reptilien