Gamersgate Hector Episode 3 Installer Only.
In case it helps... I also tried the Gamersgate version of Hector: Episode 3 on a Windows XP (32-bit) machine and it flashes up a DOS looking window and does nothing and the Gamersgate installer says it's complete. There has got to be a problem with that Gamersgate Episode 3 installer. Other folks posted the same results on the 32-bit machines.
P.S. Still won't install on Windows 7 (64-bit). <sigh>
P.P.S. This may be the same problem from months ago...