Autocad 2004 & Inventor 8 are my favorites and I tried installing them on my Laptop W7 64bit. They both installed fine and Autocad 2004 ran smooth as silk, compatibility mode on or off, no difference, just fine. My trouble was with Inventor 8, It opened but wouldn't run and locked up. I ousted W7 64bit & installed XP64, now Inventor runs great too.
Next the hotrod desktop computer. Gave up trying to install XP64bit onto the SSD, I5, 32gig ram machine. Popped W7 64bit on it, then a V-Box, then XP64bit and my Autocad 2004 & Inventor 8.
I'm just not a fan of the new Inventor 2014's hogging the resources. The old simple software from a decade ago really flys with this new hardware. Wish there was a true XP mode in W7, or W8, 9 etc.