During installation, you do have the option of setting the language.
With most Adobe installation program, there are two language choices:
1.) first is for the installer
2.) is for the language of the program to install
Do not know if PrE7 has both, but the second should easily be set.
Again, with most Adobe programs, many have one language set for the OS and another for particular programs.
Thank you for your help.
Jean Le Tallec