Hello,
I have tried this twice with the same result:
I downloaded the Adobe Download Assistant and used it to download Acrobat XI Pro. When I finished downloading the Acrobat installation file, I started it and it popped up in Slovak as the language. I selected English instead from the pull-down language menu on the first installation screen, but nothing changed, and if I continued the installation, it was in Slovak. I tried changing the language once the program was fully installed and it was partially successful - when I opened the program it was in English, but pop up windows keep coming up (I think asking me to register or submit a serial number) and they are still in Slovak. I used an online translator to get even that far! I am running Windows 7. Let me know if any other information would be useful.
Thanks.