Not everyone likes folder names like “Softimage 2011 Subscription Advantage Pack” 😉 For example, if you’re creating a deployment, it’s pretty common to exceed the Windows path length limit and hit an error.
The setup doesn’t allow you to change the name of the install folder (you can change the location from the default C:\Program Files\Autodesk, but you can’t change the root folder of the Softimage install).
However, you can use any MSI editor (such as InstEd) to change the install folder. All you have to do is edit the ADSK_INSTALL_PATH property. I thought it would be INSTALLDIR, but after a few tries, I figured out that it was ADSK_INSTALL_PATH.
Use at your own risk.