I can't FIGURE out how to make everything English.
  My computer is set up in the US, but I'm currently working in Italy.
When I open Firefox, I use GOOGLE as my homepage. It comes up in Italian. Also when I try to open Outlook in my company's VPN, I get a pop up warning in Italian, so I don't know what it says.

  Can you help?
  Thanks
  JimRegarding Google, see here

http://www.google.com/help/faq.html#eng_home

Post the VPN pop up here and I'll try to translate.
Google is coming up in Italian because it uses a GeoIP service to see where in the world you are, and then redirect you to that country's page. Quote from: Dias de verano on February 28, 2009, 03:12:10 AM

Regarding Google, see here

http://www.google.com/help/faq.html#eng_home

Post the VPN pop up here and I'll try to translate.

How can I get back to the Google homepage in English?
    You can access the standard Google homepage by clicking on the "Google in English" link from any of our foreign language homepages. If this does not work, your browser is probably not configured to accept cookies.

No need to translate.  The answer was clearly stated on your link:

Also when I try to open Outlook in my company's VPN, I get a pop up warning in Italian, so I don't know what it says.