If you log into windchill it should be under home>utilities>software downloads
(Home is a top level tab next to Project. Utilities is on the bar that will be below home and project, and software downloads is a link in the main window under utilities)
I got it to install, leaving the setup loading overnight, but the program won't load [I open it and see it appear and disappear under processes on task manager]

. Got it working on another computer that really shouldn't be running it, but I'm having difficulties trying to use it without making a billion dimensions, and the rotation is more difficult that I'd like (not sure how to get it to face up like inventor...)...It's probably in a tut that I'm to lazy to go through atm.