You should be able to get to the Regional Options Tab, based on the instructions I gave you. I included the pictures that you should see.
To set Regional Options to English (Step 5), in the drop-down menu, go to the very first option. Then hit the down arrow 51 times to get to English (United States).
You can ignore Step 6 for now. It should be easier when you get to English.
To set Advanced Tab to English (Step 7), select the drop-down menu and go to the first option. Then hit the down arrow 49 times to get to English (United States).
I'd make a picture guide, but I'm kinda lazy. =x
EDIT: Here's a LINKY
that should clear things up, hopefully.